The Kremlin said on Monday that if the United States allowed Ukraine to use U.S.-made weapons to strike far into Russia then it would lead to a rise in tension and deepen the involvement of the United States in the conflict. Reuters, citing two U.S. officials and a source familiar with the decision, reported on Sunday that the Joe Biden administration has decided to allow Ukraine to make strikes with U.S.-made weapons deep into sovereign Russian territory. Kremlin spokesman Dmitry Peskov said that the outgoing administration of Joe Biden was adding fuel to the fire and seeking to escalate the conflict in Ukraine.