Tensions remain high in the Crimean peninsula in Ukraine as European observers were again blocked from entering the by armed men.
There was a stand-off between Ukrainian soldiers and troops, thought to be Russian, at a military base outside Sevastopol.
Two trucks of Russian-speaking armed men arrived and quickly surrounded the base.
The Ukranian commander told ITV News' Senior International Correspondent John Irvine: "They have come to protect us. So why are their guns pointing towards our base?"
The base commander was unable to contact his superiors as radio contact was blocked by a Russian signal jammer.
As John reports from inside the base, Putin's claims that these soldiers, professional in their weaponry and demeanour, are not Russian "are farcical":
John tweeted updates on the situation as it unfolded on the base: