North Korean soldiers deployed to the Kursk region of Russia have begun combat operations against Ukrainian troops, the U.S. State Department confirmed Tuesday.

Rediker, Senior Fellow at the Council on Foreign Relations, details her concerns with President-Elect Donald Trump's stance on the nearly three-year-old war between Russia and Ukraine as North Korea deploys troops to aid Vladimir Putin.

And Biden has mere weeks to give the Ukrainians the resources they need to fight.