President Biden’s approval for Ukraine to use U.S.-supplied long-range missiles to strike inside Russia has incited a harsh response from Russian officials. Russian lawmakers and media characterized the decision as provocative and a major risk for escalation, with warnings of potential global conflict. As President Vladimir Putin has remained silent publicly, experts speculate on the Kremlin’s potential reactions based on prior statements regarding NATO involvement in the Ukraine war. The geopolitical implications of this decision may lead to significant changes in military strategies by both Russia and the West.