Yevgeny Prigozhin, the head of the Wagner mercenary group, has ended a short-lived revolt against Russian President Vladimir Putin with a deal brokered with the Kremlin. The deal includes pardons and dropped criminal charges for the Wagner troops, but the motivations behind Prigozhin's challenge and the long-term consequences of the revolt remain unclear. U.S. Secretary of State Antony Blinken has said that the U.S. is watching the situation "very closely and carefully" in the context of Putin's two-decade rule.