Putin's invasion of Ukraine is a direct result of Biden's projected weakness displayed during the embarrassing and deadly evacuation from Afghanistan.
Putin is a predator and a deadly product of the KGB. He looks for the weakness in his enemies, and after examining President Obama and Biden, he found it, which resulted in his two invasions of Ukraine.
By halting the Keystone XL pipeline while allowing the Nord Stream 2 pipeline to move forward, Biden made the U.S. dependent on foreign fuel and Europe dependent on Russian energy. This undeniable blunder emboldened Putin and weakened NATO.