In a significant geopolitical maneuver, Russia has denounced US President Joe Biden's decision permitting Ukraine to execute deep strikes within Russian territory using long-range missiles. The Kremlin views this as a 'significant escalation,' symbolizing direct American involvement in the Ukrainian conflict. Kremlin Spokesperson Dmitry Peskov labeled the move a 'qualitatively new round of escalation' and a 'qualitatively new situation' regarding US involvement. The New York Times reported that Biden authorized the move as a strategic response to unexpected Russian and North Korean military collaborations. This development emerges shortly before President-elect Donald Trump assumes office, who has been vocal about ending the conflict and scrutinizing US support for Ukraine.