The trial of Paul Manafort in Alexandria, Va., has drawn an eclectic mix of lawyers, tourists and political junkies determined to witness a little piece of history.

While President Xi Jinping remains firmly in charge, friction with the Trump administration and troubles at home have dented his political dominance.

In Twitter posts, the president attacked the former aide who has written a book about her time in the White House, calling her a “crazed, crying lowlife.”

The remarks by President Recep Tayyip Erdogan come as the country grapples with a worsening economic crisis and a widening diplomatic dispute with the United States.

A look at the most important primaries in Minnesota, Wisconsin, Connecticut and Vermont.

Ms. Tlaib, who won a Democratic primary in Michigan, may become the first Muslim woman in Congress. She said her upbringing shaped her political vision.

A conversation with Jahana Hayes, whose grass-roots campaign has made her a formidable challenger in Tuesday’s close primary race.

Turks are bracing for more financial turmoil. Economists warn that the problem is broader and deeper than a spat with the United States.

How the microbiologist Carl Woese fundamentally changed the way we think about evolution and the origins of life.

Mr. Strzok was one of the F.B.I.’s top counterintelligence officials. But his disparaging texts about President Trump handed a weapon to conservatives assailing the Russia investigation.

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