Plus, what to know about the next British prime minister.

We look at political donations, housing and the national debt.

Andy Burnham has not yet met President Trump, but the two men will be expected to speak shortly after Mr. Burnham becomes prime minister.

Troy Jackson’s emergence as the clear front-runner to replace Graham Platner spares the party some challenges but points to some new ones.

Chinese companies are offering artificial intelligence that is nearly as good as the leading U.S. technologies, but it’s still America’s race to lose.

A Massachusetts mother charged in the killing of her children goes on trial on Monday. The small coastal town of Duxbury is preparing to relive a case focused on postpartum mental health.

Some Republicans fear the party is poised to repeat past mistakes by nominating candidates in Tuesday’s primaries who are viewed as too extreme to sway moderate voters.

World leaders are marching us toward an uncertain era of new warfare — fast.

U.S. and Iranian attacks are unfolding in a way that risks a wider war they cannot contain, analysts warn, unless they can return to negotiations quickly.

The Qatari-donated plane has been under scrutiny over whether it is fitted with sufficient defensive capabilities to adequately protect a U.S. president and others traveling on it.

Andy Burnham, who is set to enter Downing Street on Monday, faces a long and daunting list of issues. Here are some of the most urgent.