For months, the head of the Wagner private military contractor bombarded Russia's top military leaders with expletive-ridden insults in a rift that has weakened the country's forces amid the war in Ukraine. On Friday, Yevgeny Prigozhin appeared to take a step too far. He accused Defense Minister Sergei Shoigu of ordering a rocket strike on his mercenary troops and said he would move to punish him. That's when Russian authorities struck back, with the country's top counterterrorism organization launching a criminal inquiry against Prigozhin on charges of fomenting an "armed rebellion" over thre...