A top UK general compared Russia's invasion of Ukraine to Hitler's aggression before World War II, saying forces should be mobilized to prevent the war from spreading.

The choices we make will have a disproportionate effect on the future, according to the Chief of the General Staff. Our 1937 moment is here. We are not at war but we need to act quickly so we don't get drawn into one.

The world is living through a period of history that is "profound" as the one leading up to World War II, and the British army will not mobilize to start a war.

He said that the "visceral nature of a European land war isn't just some manifestations of distant storm clouds on the horizon"

In all my years in uniform, I have never seen such a threat to the principle of sovereignty and democracy, and the freedom to live without fear of violence.

World leaders are heading to Madrid for a NATO summit. The rapid-response unit was going to be boosted from 40,000 to 300,000 troops.

Russia has continued to make slow gains in the east of the country.