President Vladimir Putin has ordered Wagner fighters to sign an oath of allegiance to the Russian state after a deadly plane crash believed to have killed Yevgeny Prigozhin, the volatile chief of the mercenary group. Putin signed the decree bringing in the change with immediate effect on Friday after the Kremlin said that Western suggestions that Prigozhin had been killed on its orders were an "absolute lie". The Kremlin declined to definitively confirm his death, citing the need to wait for test results.
