Donald Trump may call on European and British troops to enforce an 800-mile buffer zone between the Russian and Ukrainian armies as part of a plan to freeze the war between the two countries.

Details of the plan emerged as Volodymyr Zelensky warned that any attempt to make peace by appeasing Russia would mean “suicide” for Europe.

The plan is one of several being considered by Mr Trump, who said before being elected as US president that he would start peace talks before he enters office in January.

The idea, outlined by three Trump staffers, would see the current front line frozen in place and Ukraine agreeing to shelve its ambition to join Nato for 20 years.

In exchange, the US would pump Ukraine full of weapons to deter Russia from restarting the war.

The US would neither contribute troops to patrol and enforce the resulting buffer zone nor finance its mission.