By Tom Balmforth KYIV (Reuters) - An abortive mutiny in Russia has shown the risks the Kremlin faces from a long, grinding conflict in Ukraine even though it has not handed Kyiv an immediate breakthrough on the battlefield. Many questions still swirl after Russian mercenary boss Yevgeny Prigozhin's Wagner forces returned to base after Friday's mutiny, which was called off the following day under a deal brokered by the president of Belarus. But current and former officials in Kyiv say the mutiny offered a startling glimpse into the strain the Russian political system is under. It revealed that ...
