Envoys from Russia, Ukraine, Germany and France worked to arrange a new round of peace talks as rebels stepped up attacks in eastern Ukraine and killed four government troops following the arrival of a Russian convoy.
Russia's War Against Ukraine
Bloomberg Businessweek: European envoys work for Ukraine peace talks as fighting surges
A Ukrainian serviceman corrects movement of a tank near the eastern Ukrainian city of Schastya, Lugansk region on Dec. 27, 2014.
