The world is watching as the cease-fire in Ukraine progresses on shaky ground and France and Germany lead a spate of negotiations. However, Moscow's eyes are on Washington, where one of Russia's most powerful men — Alexander Bortnikov, director of the Federal Security Services, or FSB — arrived Wednesday. The same day, Kiev took another important step in implementing the cease-fire when it withdrew its forces from the eastern Ukrainian city of Debaltseve, a key location along the demarcation line where heavy fighting was still taking place. Russian Foreign Minister Sergei Lavrov said the cease-fire between Ukraine and Russian-backed separatist forces is largely being observed across the front line except in Debaltseve, which Lavrov called the "cauldron.