President Biden has authorized Ukraine to use US-supplied ATACMS missiles to target deep inside Russia, a significant policy shift aimed at bolstering Ukraine’s defense amidst escalating tensions with Russia and North Korea. The policy reversal is noted just before Biden exits office, with fears growing about future US support under potential President Donald Trump. While the move is seen as strategically beneficial, experts caution that it may not dramatically alter the war’s dynamics, and the decision could lead to increased tensions with Russia.