Kremlin says Kiev's actions damage prospects for Ukraine summit - RIA

Members of the Ukrainian armed forces drive armored vehicles in the town of Volnovakha, eastern Ukraine, January 18, 2015. REUTERS/Alexander Ermochenko

MOSCOW (Reuters) - The Kremlin said on Tuesday increased military activity by Ukrainian government forces had undermined hopes of arranging a four-way summit on the conflict in east Ukraine, Russia's RIA news agency reported.

Western leaders say the efforts to bring together the leaders of Russia, Ukraine, Germany and France are being hampered by Moscow's failure to implement a ceasefire agreement reached more than four months ago.