Concerted attack Businessman Yevgeny Prigozhin, who is described as the main sponsor of the Wagner PMC, told Syrian officials that the PMC attack in Deir ez-Zor on February 7 was agreed with Russian officials, writes The Washington Post, citing US intelligence materials . All the days before the battle in Deir ez-Zor, Prigozhin was in close contact with Russian and Syrian officials, including the head of the presidential administration, Anton Vaino.