Britain must prepare for the sudden collapse of Vladimir Putin's regime, government officials are warning, amid fears the 'mortally wounded' despot could carry out a 'Stalin-style' purge to cling on to power. Western officials warned that Putin's grip on Russia is crumbling as questions mounted over his whereabouts following the attempted coup by the Wagner mercenary forces, led by his former ally Yevgeny Prigozhin. A senior source in the UK Government told The Times that Britain 'must prepare for a whole range of scenarios' and that 'this could be Chapter One of something new'. Meanwhile, Alicia Kearns, the chairman of...