View of militia from inside barricaded coffee shop where UN specialist is trapped. (via James Mates/Twitter)

James Mates from ITV gives a Twitter exclusive.

Robert Sherry, a UN representative to Ukraine, was visiting a navy comander when he was trapped. During his visit, he returned to his car to find it blocked by men. One man reportedly had a gun.

Sherry refused to go to the car and walked until he found a coffee shop, he asked ITV news to stay with him. Sherry was trapped in the coffee shop by Russian militia. He darted out of the the coffee shop to be rescued by a waiting car as the crown shouted "Russia Russia!".

The car was then blocked by protestors changing "Putin! Putin!". As the incident ended, Robert Sherry said he was very happy to leave Crimea if it helped de escalate the situation. 

A snap shot of the tension in Crimea and an example of how Twitter documents the unfolding of an unpleasant event.

Read more at the Telegraph.  

See James Mates' live tweets here. 

Reach Executive Producer Michelle Bergman here.