CNN: 'A four-week window': Biden aims to learn from Obama's mistakes with quick moves to deter Putin from invading Ukraine. >"When the US intelligence community first picked up signs in the fall that Russia could be preparing a new attack on Ukraine, President Joe Biden directed his administration to act -- and fast."

Biden is on the top, they know what and how to manager this type of crisis.

“Biden directed his national security team to use every tool possible to try to deter Russian President Vladimir Putin while a possible invasion was still assessed to be several months away, a senior US official told CNN.”