Not this. As someone who has lived in Africa, geo-blacklisting is almost racist, makes the internet a nightmare, and does nothing at all to protect you, except a false sense of security. Any remotely non-stupid attacks, nevermind 0-days, will not route through an obvious geofence.

My step sons were locked in an empty classroom with an open window 5 stories up by a London Steiner school. Climbed out, obviously. In 2008.