Russia is warning of "serious consequences" after Ukraine's new President signed a trade and economic agreement with the European Union.
Al Jazeera's Paul Brennan reports from Donetsk, in Eastern Ukraine.
Subscribe to our channel http://bit.ly/AJSubscribe
Follow us on Twitter https://twitter.com/AJEnglish
Find us on Facebook https://www.facebook.com/aljazeera
Check our website http://www.aljazeera.com/
