European Union governments will consider whether to impose an oil embargo on Russia over its invasion of Ukraine as they gather this week with U.S. President Joe Biden for a series of summits designed to harden the West's response to Moscow, referring to foreign media.

Seeking to force a military withdrawal from Ukraine by Russian President Vladimir Putin, the EU - along with Western allies - has already imposed a panoply of punishing sanctions, including the freezing of the assets of the Russian central bank.

"We are working on the fifth round of sanctions, and many new names are being proposed," a senior EU diplomat said on condition of anonymity because the discussions are not public.