Britain: EU to prepare possible new sanctions on Russia over Ukraine

British Foreign Secretary Philip Hammond (R) talks to Ukrainian President Petro Poroshenko prior to their meeting in Kiev in this March 5, 2015 handout photo provided by the Ukrainian Presidential Press Service. Picture taken March 5, 2015. REUTERS/Ukrainian Presidential Press Service/Mykola Lazarenko/Handout via Reuters

WARSAW (Reuters) - Britain's foreign minister said on Friday the European Union would prepare possible new sanctions on Russia for its involvement in the Ukraine conflict that could be imposed quickly if the Minsk ceasefire agreement is broken.

Both Kiev and pro-Russia separatists have accused each other of violence since last month's peace deal that calls for heavy weapons to be withdrawn from the frontline in east Ukraine.