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

The British Army has said it is ready to deploy to Ukraine if requested by the government. This week, 2,500 UK troops from the Army's high readiness force, the First Division, have been taking part in a large Nato exercise in Romania - on a training area just 16 miles (25km) from the border with Ukraine.

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