Thousands of European troops to rehearse Ukraine deployment in event of peace

Exercise Koalicja - which takes place from 9-22 November - will be a rehearsal of how to move, protect and supply a force in Ukraine. It will also be a test of their command and control to ensure troops from different countries can work together.

Some 2,800 military personnel will take part across land, sea and air, with the UK contribution including 300 troops and a pair of RAF Typhoons.

Fighter jets will simulate how they would reassure commercial aircraft once Ukraine's skies can be reopened.

Turkey has agreed to lead the maritime mission, with the eventual goal to clear mines and allow the resumption of trade in the Black Sea.