Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Shelling Rocks Ukraine's Donetsk by VOA News Ukraine's separatist bastion of Donetsk came under intense artillery fire Sunday, increasing strains on a two-month-old cease-fire deal between Ukrainian government forces and pro-Russian separatists. European monitors in Ukraine say they are very concerned after seeing convoys of heavy weapons and tanks in separatist-controlled areas of Ukraine. The OSCE chairperson-in-office, Swiss President and Foreign Minister Didier Burkhalter, said he is worried about a resurgence of violence. He urged all sides Saturday to do all in their power to further consolidate the cease-fire and stay away from acts that could lead to a new escalation. U.S. Secretary of State John Kerry said in Beijing Saturday the U.S. and Russia agreed to exchange information about developments in Ukraine. When it comes to sanctions against Russia, Kerry said choices Moscow makes on Ukraine will decide what happens. Russian Foreign Minister Sergei Lavrov, who met briefly with Kerry, said it is up to the separatists and Ukrainian government to finalize the cease-fire. Ukraine says Russia has sent dozens of tanks, heavy weapons, ammunition and soldiers into Kremlin-backed eastern Ukraine. NATO sources said that the vehicles appeared to be unmanned. But a spokesperson said they "represent a potential for significant reinforcements of heavy weapons to the Ukrainian separatists." __________________________________________________________________ [1]http://www.voanews.com/content/shelling-rocks-ukraine-donetsk/251361 8.html References 1. http://www.voanews.com/content/shelling-rocks-ukraine-donetsk/2513618.html