MANAUS, Brazil (AP) — President Joe Biden has authorized Ukraine to use U.S.-supplied missiles to strike deeper inside Russia. The move eases limitations on the weapons as Russia deploys thousands of North Korean troops to reinforce its war. Word of the decision comes from a U.S. official and three other people familiar with the matter. Thousands of North Korean troops have been sent to Ukraine’s northern border to help Russia reclaim hundreds of kilometers of territory seized by Ukrainian forces. President-elect Donald Trump has said he would bring about a swift end to the war and has expressed skepticism over continued support for Ukraine.