Sen. Tammy Duckworth (D-IL):
"I never thought, in the 23 years I served in the military, that I would hear the commander-in-chief of the United States Military parroting a Russian talking point.
It is, astonishing to me that he would also betray our allies in Europe in this way and pave the way for Putin.
The president essentially has just surrendered to Putin and that simply is not acceptable."