H itler regretted the deal he made with Neville Chamberlain at Munich in 1938. What he actually wanted was war—his goal was to conquer all of Czechoslovakia by force as a first step toward the conquest of all of Europe.

The public blowup could propel President Vladimir V. Putin of Russia to escalate the fight in Ukraine instead of agreeing to peace.

In an interview broadcast on Monday, President Vladimir ... The city has been under heavy bombardments that have escalated this month.Credit...Tyler Hicks/The New York Times Mr. Putin said there ...