Russian supporters of Yevgeny Prigozhin gathered outside the Wagner headquarters in Saint Petersburg on Thursday to pay their respects to the mercenary group's boss, presumed dead after a mysterious plane crash. Russian officials have launched a probe into the cause of the crash, but investigators gave no update on Thursday.
Two officials tell CNN that the U.S. government has not seen a change in Russia's nuclear posture despite what happened earlier on Saturday, when the head of the Wagner Paramilitary Group, Yevgeny Prigozhin, threatened to march to Moscow and topple the country's military leaders.