Vladimir Putin is facing mutiny from his biggest war Ukraine backers amid fears of an impending coup. An unprecedented wave of defeatism over the war has gripped the “toxic” Kremlin dictator’s most ardent supporters. This follows a wave of crippling Ukrainian drone and missile strikes which have paralysed Putin’s oil exports and savaged his key military factories. Russian gains on the frontline have ground to a virtual halt, with some reversals, amid catastrophic losses of 8,000 or more soldiers a week.