Russia on Thursday rejected the idea of NATO countries sending peacekeeping troops to Ukraine in the event of a ceasefire in the war with Russia, saying such a move would threaten to cause an "uncontrollable escalation".

NATO has been ramping up its forces along its eastern flank with Russia, Belarus, and Ukraine, deploying thousands of troops and equipment to deter Moscow from expanding its war into the territory of any of the organization’s 32 member countries.

Donald Trump pledged to end the conflict in Ukraine, but the war has proved harder to solve than he once thought. Now, he says he'll sanction Russia.

Russia is believed to be behind dozens of hybrid attacks, like arson or sabotage, on NATO soil since the Ukraine war started.

To bring Russia to the negotiating table and end the war in Ukraine, Vladimir Putin needs to believe time is no longer on his side. Here's what the Trump administration needs to do to make that