Speaking after Friday’s summit, President Putin again implied that the war is all about Russia’s diminished status since the fall of the Soviet Union.

President Trump’s break from a strategy agreed to with European allies could give President Vladimir V. Putin of Russia an edge as talks to end the fighting continue.

A walkout by flight attendants ended after about 12 hours with the imposition of binding arbitration. But getting travel back to normal will take days.

President Volodymyr Zelensky of Ukraine will go to Washington on Monday seeking answers.

The U.S. president’s latest statements are a reversal of much of what he seemed to have agreed to with European allies this past week.

Turkey has arrested at least 390 people associated with the political opposition since March.

Nearly two years of demonstrations have failed to push Prime Minister Benjamin Netanyahu to reach a deal with Hamas that would end the war and free the remaining captives

President Trump said that he and President Vladimir V. Putin of Russia favor a comprehensive deal over the immediate cease-fire Ukraine wants. President Volodymyr Zelensky of Ukraine said he would meet with Mr. Trump in Washington on Monday.

The problem is that they have no strategy of their own for ending the Ukraine war, other than hoping to contain Russia over the longer term.

Ahead of the work stoppage, the airline said it had canceled most of the 700 flights that it directly operates, which carry about 130,000 people each day.