The newspaper told Common Cause, an advocacy group, that it was pulling its special ad, which would have covered the front and back pages of some Tuesday editions.

James Murdoch on mind games, sibling rivalry, and the war for the family media empire

The move by the president, whose authority to make the changes was not clear, is the latest attempt to bring a Washington institution under his control.

Much of the billionaire’s handiwork — gaining access to internal systems and asking employees to justify their jobs — is being driven by a group of engineers operating in secrecy.

Keyword, a new game from The Washington Post, gives you six words — each missing one letter — and you have to find the word that connects them.

Billionaire Elon Musk’s team yesterday took control of the Treasury’s payment system, thus essentially gaining access to the checkbook with which the United States handles about $6 trillion annually a...