Putin warns West: Moscow has ‘red line’ about Ukraine, NATO

Russian President Vladimir Putin attends a video call of the VTB Capital "Russia Calling!" Investment Forum on Tuesday in Moscow, Russia. (Mikhail Metzel, Sputnik, Kremlin Pool Photo via AP)

Russian President Vladimir Putin attends a video call of the VTB Capital "Russia Calling!" Investment Forum in Moscow, Russia, Tuesday, Nov. 30, 2021. (Mikhail Metzel, Sputnik, Kremlin Pool Photo via AP)

MOSCOW — Russian President Vladimir Putin on Tuesday sternly warned NATO against deploying its troops and weapons to Ukraine, saying it represents a red line for Russia and would trigger a strong response.