Putin’s Red Lines and War Aims Shift in Ukraine

From a Wall Street Journal story by Laurence Norman and Stephen Fidler headlined “Putin’s Red Lines, War Aims Shift in Ukraine”:

President Vladimir Putin‘s invasion of Ukraine has been punctuated by frequent Russian threats to escalate the war. Many have been later dialed down or ignored, leaving the U.S. and its allies guessing what the Russian leader’s real red lines are.

Russia’s repeated ultimatums and U-turns, along with its ever-shifting war aims, have reinforced the belief among Western government officials that Mr. Putin is being forced to improvise in a war that has slipped out of his control.