Media playback is unsupported on your device

Tension over Ukraine ceasefire

25 June 2014 Last updated at 06:49 BST

The ceasefire agreement in Ukraine is under pressure after the military claimed one of its helicopters was shot down by pro-Russian activists.

There is also tension between Russia and Ukraine's Western allies over the support given to the conflicting parties in the crisis.

Jonathan Marcus reports.

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.