Ukraine will ask the EU next week to consider big new steps to isolate Moscow, including seizing Russian assets and bringing in sanctions for some buyers of Russian oil, as U.S. President Donald Trump has backed off from tightening sanctions.

A previously unreported Ukrainian white paper to be presented to the EU calls for the 27-member bloc to take a more aggressive and independent position on sanctions as uncertainty hangs over Washington's future role.

Among 40 pages of recommendations were calls to adopt legislation that would speed up the EU's seizure of assets from sanctioned individuals, and send them to Ukraine. Those under sanctions could then seek compensation from Russia.