The U.S. is lobbying countries around the world to oppose a resolution brought forward at the U.N. General Assembly by Ukraine and European countries.

Ukraine enters the fourth year of all-out war with Russia on Monday, unsure it can rely any longer on its staunchest ally the United States as its exhausted troops fight to hold their ground against unrelenting enemy advances.

Russia's embassy in London said Britain's new package of sanctions against Russia over its invasion of Ukraine was "illegitimate" and many of those targeted had no connection to the conflict.

Earlier, Prime Minister Keir Starmer said the package would be Britain's largest against Russia since the early days of the Ukraine war, including more measures against vessels used to help Russia evade sanctions and targeting companies in China and elsewhere who supply military components.