Prof Cathryn Costello
@profccostello.bsky.social
Full Prof of Global Refugee and Migration Law, Sutherland School of Law, UCD; ex-Refugee Studies Centre, University of Oxford; ex-Centre for Fundamental Rights, Hertie School, Berlin. Recent return migrant after two decades.
Woke up to this. A city I love, making a great choice!
November 5, 2025 at 6:57 AM
Woke up to this. A city I love, making a great choice!
Reposted by Prof Cathryn Costello
A few flashlights from my latest open access publication with @judithkohlenberger.bsky.social and @bernd-parusel.bsky.social in the European Journal of Migration and Law: (1/4)
brill.com/view/journal...
brill.com/view/journal...
October 26, 2025 at 3:10 PM
A few flashlights from my latest open access publication with @judithkohlenberger.bsky.social and @bernd-parusel.bsky.social in the European Journal of Migration and Law: (1/4)
brill.com/view/journal...
brill.com/view/journal...
Reposted by Prof Cathryn Costello
Tremendous event 26 November between @northeasternu.bsky.social and @ucddublin.bsky.social - where can we see positive international collaboration even during an era of fragmentation and polarisation? Join us. Contact @bentonra.bsky.social for event registration and feel free to share widely.
October 24, 2025 at 1:34 PM
Tremendous event 26 November between @northeasternu.bsky.social and @ucddublin.bsky.social - where can we see positive international collaboration even during an era of fragmentation and polarisation? Join us. Contact @bentonra.bsky.social for event registration and feel free to share widely.
Reposted by Prof Cathryn Costello
Not good enough. This needs investigation and consequences.
Catherine Connolly files formal complaint to Electoral Commission over AI deepfake videos on FB — says the "malicious" videos are an attempt to "undermine democracy".
Meanwhile, both main regulators say it's not their job to find out who made the videos.
www.independent.ie/business/tec...
Meanwhile, both main regulators say it's not their job to find out who made the videos.
www.independent.ie/business/tec...
Catherine Connolly files complaint to Electoral Commission over viral AI deepfake videos on Facebook that generated 160,000 views
A series of Al deepfake videos of RTÉ news bulletins criticising presidential candidate Catherine Connolly amassed over 160,000 views and hundreds of genuine comments on Facebook over several days bef...
www.independent.ie
October 22, 2025 at 5:10 PM
Not good enough. This needs investigation and consequences.
Reposted by Prof Cathryn Costello
Joint policy brief on the trafficking of migrant women workers in poorly regulated sectors, by the UN Special Rapporteur on trafficking in people (Siobhan Mullally) and UNWomen - www.linkedin.com/posts/siobh%...
Addressing the trafficking of women migrant workers in poorly regulated sectors | Siobhán Mullally
Our new joint Policy brief, just published with UN Women, addressing trafficking of women migrant workers in sectors such as agriculture, fisheries, domestic work, hospitality and garment production. ...
www.linkedin.com
October 21, 2025 at 2:34 PM
Joint policy brief on the trafficking of migrant women workers in poorly regulated sectors, by the UN Special Rapporteur on trafficking in people (Siobhan Mullally) and UNWomen - www.linkedin.com/posts/siobh%...
Never hear about events in my home town Tralee til after the event! Take note #speirgorm Will turn up! Looks great Tedx Tralee!
Doing my first ever TEDx talk in tralee as part of Tralee TEDx festival - nerves (maybe! 😬) but also looking forward to it - it’s a family affair as the sisters company, quest and thrive, are running wellness zone part. Tickets if you’re around below #speirgorm www.tedxtralee.com?fbclid=IwdGR...
October 19, 2025 at 12:03 PM
Never hear about events in my home town Tralee til after the event! Take note #speirgorm Will turn up! Looks great Tedx Tralee!
Reposted by Prof Cathryn Costello
My post with Sebastian VM on #WesternSahara: does the Commission's new agreement respect the requirements established by the #CJEU in October 2024? In short: nope!
How Not to Trade with Occupying Powers: Western Sahara and the Amendment to the EU-Moroccan Association Agreements | by Andrea Maria Pelliconi and Sebastian von Massow
How Not to Trade with Occupying Powers: Western Sahara and the Amendment to the EU-Moroccan Association Agreements
On October 3 2025, the EU and Morocco concluded an amendment (‘the amendment’) to the EU-Mediterranean Agreement (‘the association agreement’). With the approval of the Council it is already being app...
www.ejiltalk.org
October 17, 2025 at 5:41 PM
My post with Sebastian VM on #WesternSahara: does the Commission's new agreement respect the requirements established by the #CJEU in October 2024? In short: nope!
Thanks @svaroschi.bsky.social and @mariafarrell.bsky.social I have now read this blistering piece with relish. Highly recommended!
There are drinking games and then there's re-reading "The Prodigal Techbro" every time @mariafarrell.bsky.social is mentioned.
(I am fun at parties, I swear)
conversationalist.org/2020/03/05/the-prodigal-techbro/
(I am fun at parties, I swear)
conversationalist.org/2020/03/05/the-prodigal-techbro/
The Prodigal Techbro
Prodigal tech bro stories skip straight from the past, when they were part of something that—surprise!—turned out to be bad, to the present, where they are now a moral authority on how to do good…
conversationalist.org
October 17, 2025 at 5:23 PM
Thanks @svaroschi.bsky.social and @mariafarrell.bsky.social I have now read this blistering piece with relish. Highly recommended!
Reposted by Prof Cathryn Costello
Without a shift in policy, the dominant trajectory of technology in immigration will continue to be digital surveillance. It doesn't have to be that way.
Very glad to talk about our global research on technology and alternatives to detention on @techpolicypress.bsky.social.
Very glad to talk about our global research on technology and alternatives to detention on @techpolicypress.bsky.social.
Companies are marketing “alternatives” to immigration detention such as ankle monitors, GPS-enabled watches, and biometric reporting apps. But research by Petra Molnar, Daniel Ghezelbash, Carolina Gottardo, and Antonella Napolitano finds that tech doesn’t dismantle detention—it expands it.
Technology is Turning Immigration Detention into an Invisible Leash | TechPolicy.Press
Rights-based and community-centered alternatives to detention are possible, write Petra Molnar, Daniel Ghezelbash, Carolina Gottardo, and Antonella Napolitano.
www.techpolicy.press
September 23, 2025 at 2:41 PM
Without a shift in policy, the dominant trajectory of technology in immigration will continue to be digital surveillance. It doesn't have to be that way.
Very glad to talk about our global research on technology and alternatives to detention on @techpolicypress.bsky.social.
Very glad to talk about our global research on technology and alternatives to detention on @techpolicypress.bsky.social.
Looking forward to reading - migration controls - always a weak spot for human rights - now in full autocratic mode ..
My new paper on "How Speech-Based Immigration Restrictions Threaten Academic Freedom" (forthcoming in Lee Bollinger & Geoffrey Stone, eds., Academic Freedom in the Era of Trump, Oxford Univ. Press): papers.ssrn.com/sol3/papers....
How Speech-Based Immigration Restrictions Threaten Academic Freedom
<div>
Since he returned to office in January 2025, President Donald Trump’s administration has engaged in a systematic effort to deport non-citizen university
papers.ssrn.com
October 17, 2025 at 3:28 PM
Looking forward to reading - migration controls - always a weak spot for human rights - now in full autocratic mode ..
Reposted by Prof Cathryn Costello
My book, out now! On migration law's treatment of women, gender-based violence, and the legal challenges that migrant women have brought to the rules that determine their status. I have links if you want to review a copy or read a free chapter....
global.oup.com/academic/pro...
global.oup.com/academic/pro...
October 2, 2025 at 1:13 PM
My book, out now! On migration law's treatment of women, gender-based violence, and the legal challenges that migrant women have brought to the rules that determine their status. I have links if you want to review a copy or read a free chapter....
global.oup.com/academic/pro...
global.oup.com/academic/pro...
Reposted by Prof Cathryn Costello
The Wolfson Report treats #NorthernIreland and the international legal commitments of the UK Government - which are very clearly spelled out in the #1998Agreement - as mere political agreements.
Once again it is a Treaty & requires #ECHR rights - not UK versions of them
1/3
Once again it is a Treaty & requires #ECHR rights - not UK versions of them
1/3
Ehm...
1) Because it is an integral part of the UK - not an overseas territority etcs., - & UK wide law applies to it
2) Direct Rule is always a possibility
3) Nice to the Conversative & Unionist Party looking for yet another sea border, as that is so popular.
See caj.org.uk/wp-content/u...
1) Because it is an integral part of the UK - not an overseas territority etcs., - & UK wide law applies to it
2) Direct Rule is always a possibility
3) Nice to the Conversative & Unionist Party looking for yet another sea border, as that is so popular.
See caj.org.uk/wp-content/u...
October 6, 2025 at 8:28 AM
The Wolfson Report treats #NorthernIreland and the international legal commitments of the UK Government - which are very clearly spelled out in the #1998Agreement - as mere political agreements.
Once again it is a Treaty & requires #ECHR rights - not UK versions of them
1/3
Once again it is a Treaty & requires #ECHR rights - not UK versions of them
1/3
Thanks @hollycullenfreo.bsky.social for this public service - international labour law at the ICJ!
I'm no @drnajimagi.bsky.social (I'm more of an ILO nerd), but I watched yesterday's oral hearings in the advisory opinion proceedings on the right to strike under ILO Convention No 87 at the ICJ and provided some highlights in the thread below.
Happening now: live broadcast of oral submissions on the advisory opinion request from the ILO on the right to strike under ILO Convention No 87 on Freedom of Association.
October 7, 2025 at 4:38 AM
Thanks @hollycullenfreo.bsky.social for this public service - international labour law at the ICJ!
I despair of UK asylum developments - from bad to worse in terms of wrongheaded performative cruelty
Labour continues to show complete disregard for either basic humanity or reality.
While family reunion routes are already fairly limited, you couldn't create a bigger gift to smuggling gangs than cancelling them. These policies will increase number of people forced to use irregular routes. #r4today
While family reunion routes are already fairly limited, you couldn't create a bigger gift to smuggling gangs than cancelling them. These policies will increase number of people forced to use irregular routes. #r4today
There is no such thing, as Starmer well knows, as a "golden ticket of resettlement and family reunion" for people who have been granted refugee status. This is meaningless guff aimed to play to populist fantasies that refugees get provided with everything. 1/
www.theguardian.com/uk-news/2025...
www.theguardian.com/uk-news/2025...
October 2, 2025 at 6:06 AM
I despair of UK asylum developments - from bad to worse in terms of wrongheaded performative cruelty
Reposted by Prof Cathryn Costello
From 1939-1945 German officers also listened to speeches from civilians about how the laws of war didn’t apply to them. And then they participated in the Holocaust, starved millions of prisoners of war, destroyed villages and cities, and were defeated.
Hegseth: "We unleash overwhelming and punishing violence on the enemy. We also don't fight with stupid rules of engagement. We untie the hands of our warfighters to intimidate, demoralize, hunt, and kill the enemies of our country. No more politically correct and overbearing rules of engagement."
October 2, 2025 at 12:47 AM
From 1939-1945 German officers also listened to speeches from civilians about how the laws of war didn’t apply to them. And then they participated in the Holocaust, starved millions of prisoners of war, destroyed villages and cities, and were defeated.
Reposted by Prof Cathryn Costello
So excited for this event!
We're hosting our final project event on 29 Sept.
Land, Property and Spatial [In]Justice: Towards a Legal Geography of International Law
W/ project team & stellar guest speakers who influenced us
@amandabyer.bsky.social @sonyacotton.bsky.social @sineadmercier.bsky.social @elaj-ucd.bsky.social
Land, Property and Spatial [In]Justice: Towards a Legal Geography of International Law
W/ project team & stellar guest speakers who influenced us
@amandabyer.bsky.social @sonyacotton.bsky.social @sineadmercier.bsky.social @elaj-ucd.bsky.social
September 28, 2025 at 2:53 PM
So excited for this event!
Reposted by Prof Cathryn Costello
The programme is here! TriCON New Voices in Constitutional Law Workshop features 6 brilliant ECRs tackling diverse research inquiries, with expert feedback from leading constitutional law academics - plus a keynote session by Prof. Leah Trueblood. @tricondublin.bsky.social
September 23, 2025 at 9:38 AM
The programme is here! TriCON New Voices in Constitutional Law Workshop features 6 brilliant ECRs tackling diverse research inquiries, with expert feedback from leading constitutional law academics - plus a keynote session by Prof. Leah Trueblood. @tricondublin.bsky.social
Reposted by Prof Cathryn Costello
"the European Commission presented today its proposal to the Council to suspend certain trade-related provisions of the Association Agreement between the EU and Israel ... as well as its proposals for sanctions on Hamas, extremist ministers and violent settlers"
ec.europa.eu/commission/p...
ec.europa.eu/commission/p...
September 17, 2025 at 3:22 PM
"the European Commission presented today its proposal to the Council to suspend certain trade-related provisions of the Association Agreement between the EU and Israel ... as well as its proposals for sanctions on Hamas, extremist ministers and violent settlers"
ec.europa.eu/commission/p...
ec.europa.eu/commission/p...
Reposted by Prof Cathryn Costello
A busy week...
My @refugeelab.ca released our report about tech and alternatives to immigration detention, co-authored by @danghez.bsky.social & @petramolnar.com, and co-published with @kaldorcentre.bsky.social and @idcoalition.bsky.social:
www.unsw.edu.au/content/dam/...
My @refugeelab.ca released our report about tech and alternatives to immigration detention, co-authored by @danghez.bsky.social & @petramolnar.com, and co-published with @kaldorcentre.bsky.social and @idcoalition.bsky.social:
www.unsw.edu.au/content/dam/...
September 16, 2025 at 4:31 PM
A busy week...
My @refugeelab.ca released our report about tech and alternatives to immigration detention, co-authored by @danghez.bsky.social & @petramolnar.com, and co-published with @kaldorcentre.bsky.social and @idcoalition.bsky.social:
www.unsw.edu.au/content/dam/...
My @refugeelab.ca released our report about tech and alternatives to immigration detention, co-authored by @danghez.bsky.social & @petramolnar.com, and co-published with @kaldorcentre.bsky.social and @idcoalition.bsky.social:
www.unsw.edu.au/content/dam/...
Reposted by Prof Cathryn Costello
A must read from Guy S Goodwin-Gill - his exortation at the end
'We must make it known that we do not want and will not share our space with war criminals or génocidaires.'
& that we must talk & talk about genocide needs to be heard loud & clear among public international law scholars
'We must make it known that we do not want and will not share our space with war criminals or génocidaires.'
& that we must talk & talk about genocide needs to be heard loud & clear among public international law scholars
September 4, 2025 at 8:27 AM
A must read from Guy S Goodwin-Gill - his exortation at the end
'We must make it known that we do not want and will not share our space with war criminals or génocidaires.'
& that we must talk & talk about genocide needs to be heard loud & clear among public international law scholars
'We must make it known that we do not want and will not share our space with war criminals or génocidaires.'
& that we must talk & talk about genocide needs to be heard loud & clear among public international law scholars
Reposted by Prof Cathryn Costello
From myself & @colinmurray.bsky.social on the European Convention on Human Rights & very briefly (bc it is clear) why it is not plausible to claim that it is possible to leave & not breach the 1998 Good Friday/Belfast Agreement.
A new report by @colinmurray.bsky.social and @aoifemod.bsky.social explains claims the UK could leave the ECHR without breaching the Good Friday Agreement are “not credible.”
caj.org.uk/wp-content/u...
caj.org.uk/wp-content/u...
September 16, 2025 at 11:30 AM
From myself & @colinmurray.bsky.social on the European Convention on Human Rights & very briefly (bc it is clear) why it is not plausible to claim that it is possible to leave & not breach the 1998 Good Friday/Belfast Agreement.
Reposted by Prof Cathryn Costello
📢 Marking 75 years of the European Convention on Human Rights (#ECHR) and 35 years of the #VeniceCommission
ECHR and Venice Commission: Guarding Human Rights and the Rule of Law, and Facilitating Constitutional Resilience
📌 BIICL, London | 🗓 6–7 Nov 2025
📌 Programme now available
buff.ly/hK00usl
ECHR and Venice Commission: Guarding Human Rights and the Rule of Law, and Facilitating Constitutional Resilience
📌 BIICL, London | 🗓 6–7 Nov 2025
📌 Programme now available
buff.ly/hK00usl
September 13, 2025 at 1:43 PM
📢 Marking 75 years of the European Convention on Human Rights (#ECHR) and 35 years of the #VeniceCommission
ECHR and Venice Commission: Guarding Human Rights and the Rule of Law, and Facilitating Constitutional Resilience
📌 BIICL, London | 🗓 6–7 Nov 2025
📌 Programme now available
buff.ly/hK00usl
ECHR and Venice Commission: Guarding Human Rights and the Rule of Law, and Facilitating Constitutional Resilience
📌 BIICL, London | 🗓 6–7 Nov 2025
📌 Programme now available
buff.ly/hK00usl
Reposted by Prof Cathryn Costello
Now listened all the way through and repeat my recommendation. But not for squeamish, since has EHCR and Refugee Conv gone in 10 y, possible Farage PM, mass deportation in near future, and EU transformed into vehicle of pan-Euro exclusionary "Christian" nationalism. All avoidable if we fight back.
September 13, 2025 at 2:01 PM
Now listened all the way through and repeat my recommendation. But not for squeamish, since has EHCR and Refugee Conv gone in 10 y, possible Farage PM, mass deportation in near future, and EU transformed into vehicle of pan-Euro exclusionary "Christian" nationalism. All avoidable if we fight back.
Reposted by Prof Cathryn Costello
Our new edited volume, Non-signatory States in International Refugee Law, has just been published 📌
The open access book explores the intricate relationship between the international refugee regime and states that are not signatories to the 1951 Convention and its 1967 Protocol.
Read the full book:
The open access book explores the intricate relationship between the international refugee regime and states that are not signatories to the 1951 Convention and its 1967 Protocol.
Read the full book:
Non-signatory States in International Refugee Law
"Non-signatory States in International Refugee Law" published on 09 Sep 2025 by Brill | Nijhoff.
brill.com
September 10, 2025 at 1:18 PM
Our new edited volume, Non-signatory States in International Refugee Law, has just been published 📌
The open access book explores the intricate relationship between the international refugee regime and states that are not signatories to the 1951 Convention and its 1967 Protocol.
Read the full book:
The open access book explores the intricate relationship between the international refugee regime and states that are not signatories to the 1951 Convention and its 1967 Protocol.
Read the full book:
Reposted by Prof Cathryn Costello
Today the elected members to the judiciary in Mexico 🇲🇽 take office and so a new era of sheer uncertainty re the independence & quality of judicial admin begins.
September 1, 2025 at 2:20 PM
Today the elected members to the judiciary in Mexico 🇲🇽 take office and so a new era of sheer uncertainty re the independence & quality of judicial admin begins.