On November 18th, local time on November 17th, Slutsky, Chairperson of the International Affairs Committee of the Russian State Duma, responded to the news that "< b > the US government has allowed Ukraine to use US weapons to attack targets in Russia ", saying that the use of US-made missiles to strike deep in the Russian region will inevitably lead to an extremely serious escalation of the situation, which may have more serious consequences. It is impossible for the Biden administration not to understand that they will leave the Trump team not only to solve the conflict in Ukraine, but also to prevent global confrontation. Previously, three people familiar with the matter said that the Biden administration has lifted restrictions on Ukraine's use of U.S.-supplied weapons to attack targets in Russia, < b > a major change in U.S. policy in the Russian-Ukrainian conflict .