Ukraine crisis: 'Sense of inevitability of Russian invasion'
26 April 2014 Last updated at 10:33 BST
There is no sign of de-escalation in eastern Ukraine, according to the BBC's Natalia Antelava who has been in Donetsk and Slaviansk.
She told BBC World News that tension was very high, with armed men patrolling the streets, and that her team had been held at gunpoint.
Locals on both sides felt a sense of "inevitability" of a Russian invasion, she continued, and there was "a real fear" that there would be a clash.
She said she saw evidence on Friday that some armed men in Slaviansk were from Russia