Here's what it's like on an air base in Lithuania, on Russia's doorstep, where Spanish jets are deployed to support NATO air policing operations.

The bid by U.S. President Donald Trump to take over Greenland heralds a “deep crisis” for NATO and raises questions about the alliance's preservation as a single military-political bloc, Russia's top diplomat said Tuesday.

"The Russian people are increasingly feeling the effects of the Kremlin's continued prioritization of the Russian defense industrial base."

"The transatlantic alliance is over,” Kremlin aide and businessman Kirill Dmitriev posted on social media.

NATO chief Mark Rutte says U.S. versus Danish control of Greenland was not discussed in his talks with President Donald Trump, which led to an agreement on new Greenland "framework."

Up to 25,000 Russian soldiers are being killed every month, NATO Secretary General Mark Rutte said this week.

The Russian president told a Security Council meeting on Wednesday, "What happens to Greenland is none of our business."

President Donald Trump posted AI images and leaked text messages as the dispute over Greenland dispute grows. Ariana Triggs. More Videos