It comes as 2,500 UK troops take part in Nato's largest exercise this year near Ukraine's border.

Years of spending cuts have removed the ability of British forces to prosecute a war against a peer adversary for an extended time.

Prime minister Sir Keir Starmer has announced he is “ready and willing” to put British troops on the ground in Ukraine to enforce any peace deal.

The UK 'would be expected to play a major role' if a peacekeeping force is sent to enforce ceasefire with Russia

With the world watching, UK troops in Romania are on the brink of a mission that could alter international dynamics.