Russia warns of strong response to US missile approval for Ukraine

Russia has warned of an "appropriate and tangible" response to the U.S. decision allowing Ukraine to use long-range missiles against targets in Russia. This marks a significant shift in U.S. policy as the war in Ukraine approaches its 1,000th day. President Biden's approval of the missiles comes amid intensified Russian attacks on Ukrainian infrastructure and the arrival of North Korean troops in Russia. Ukraine may first target the Kursk region, where it has gained a foothold. The U.S. has indicated it will respond to North Korea's involvement and Russia's escalated attacks. Meanwhile, President-elect Donald Trump has not yet commented on Biden's decision or its implications for U.S. foreign policy.