The European Union's latest effort to restrict Russia's oil revenue is unlikely to hurt Moscow's war effort severely, leaving U.S. President Donald Trump's threat of secondary sanctions one of the few remaining economic levers to pressure the Kremlin.

MOSCOW - Russia has substantially expanded its entry ban list of representatives of EU institutions and member states, as well as other European countries, the Russian Foreign Ministry said Tuesday.

Iran schedules diplomatic meetings with Russia, China and European nations as the deadline approaches for a new nuclear deal to avoid the reimposition of U.N. Security Council sanctions.

Private refineries stopped in China are getting a second life in the hope of getting Russian oil at a discount after the introduction of new sanctions The EU and the reduction of the price ceiling from $ 60 to $ 47.

The European Union agreed to block attempts to revive the Nord Stream gas pipelines and lower a price cap for Russian oil sales, among other measures.

Oil prices fell on Monday as the latest European sanctions on Russian oil were expected to have minimal impact on supplies, but losses were curbed by investors weighing a potential drop in diesel supplies.

The European Union and Britain are ramping up pressure on Russia over its war on Ukraine. The EU has introduced new sanctions to deprive Moscow of energy revenue through a lower oil price cap and a ban on transactions with Nord Stream gas pipelines.

The Kremlin is sticking to its war demands, even as President Trump makes new threats of sanctions that would go into effect if Russian President Vladimir Putin does not agree to a ceasefire with

Rosneft, Russia's biggest oil producer, on Sunday slammed European Union sanctions on India's Nayara Energy refinery as unjustified and illegal, saying the restrictions directly threatened India's energy security.

The Washington-based Institute for the Study of War noted that cooperation with China has allowed Russia to bypass Western sanctions on imports of electronics for drone production. Ukraine’s military intelligence estimates that Russia receives up to 65% of components for its Geran drones from China. Beijing rejects the claims.