Ukraine is in "grave danger" of an escalation in its conflict against separatists, President Petro Poroshenko said, as diplomats restarted peace talks and NATO accused Russia of involvement in the fighting.
Russia's War Against Ukraine
Bloomberg: Ukraine talks start in Berlin as Poroshenko warns of escalation (VIDEO)
(L-R) Russian Foreign Minister Sergei Lavrov, German Foreign Minister Frank-Walter Steinmeier, Ukrainian Foreign Minister Pavlo Klimkin and France's Foreign Minister Laurent Fabius pose for a group photo as they attend a meeting on the situation in Ukraine at Villa Borsig, official guest house of the foreign ministry, in Berlin on January 21, 2015.
