US and NATO provoked this war. They knew about the ethnic cleansing of Russians living in the Donetsk and Luhansk areas of Ukraine. The last skirmish with the separatists and Russia, Ukraine signed the Minsk agreement which Ukraine did not implement. Merkel admitted that it was all a trick to re-arm Ukraine for another showdown with Russia. Two, Putin told NATO his red line which is not make Ukraine a NATO member. Ukraine has the longest common border with Russia. In addition, if Ukraine was a NATO member, NATO can put nuclear missiles right on Russia's borders. They already had Poland, Estonia, Lithuania, etc. pretty close to Russia. Yet, NATO wanted to keep expanding when Russia is already a smaller country than it once, were. The smart move for NATO which could have avoided the war is to pressure Ukraine to adhere and implement the Minsk agreement, declare Ukraine a neutral country and then, move nuclear missiles from Poland, Estonia, Lithuania to the UK, France or Germany. That would have easily de-escalated tensions with Russia. Instead, Joe Biden lit the fuse by threatening Vladimir Putin with sanctions and giving him nothing. Putin decided he will solve the problem himself by removing Zelensky. His mistake was he sent too few Russian troops to try and capture Kiev. Also, he should have bombed and destroyed with missiles all military air bases and air defenses of Ukraine.