From a New York Times story by Gaya Gupta headlined “What Led to the Standoff Between Russia and Prigozhin”:

For years, Yevgeny V. Prigozhin, the Wagner mercenary leader who conducted a brief rebellion against the Russian military, had been a loyal supporter of President Vladimir V. Putin of Russia.

In recent months, he continued to steer clear of directly criticizing Mr. Putin, even as he increasingly used social media to lambaste Russia’s military, accusing its leaders of treason and blaming them for failing to provide his forces with enough resources.