Blinken met European allies in Berlin on Thursday (January 20), seeking to present a united front ahead of last-ditch crisis talks with Russia aimed at preventing Moscow from attacking Ukraine.

The top U.S. diplomat has been on a mission to head off war, which will culminate on Friday (January 21) with a meeting with Russia's Foreign Minister Sergei Lavrov in Geneva.

Blinken visited Kyiv on Wednesday (January 19) and was meeting German, French and British ministers on Thursday in Berlin.

On Wednesday, U.S. President Joe Biden gave his clearest indication yet that he believes an attack is likely: "My guess is he will move in," Biden said of Russian President Vladimir Putin. "He has to do something."