Biden invites Putin to a crunch summit amid deteriorating relations between Russia and the United States, as American warships set course for the Black Sea.

The White House has proposed a formal meeting in “a third country” between Russian President Vladimir Putin and his US counterpart, Joe Biden, to discuss tensions in Ukraine, security issues, and the need for nuclear arms control. Officials from the United States announced that the two leaders discussed “a variety of regional and global issues” […]