His grandfather, Pyotr Fedorovich Tchaikovsky (né Petro Fedorovych Chaika), served first as a physician's assistant in the army and later as city governor of Glazov in Viatka. Source: Internet
The working relationship between Veselnitskaya and Chaika tracks with the June 2016 email to Trump Jr. that claimed the "crown prosecutor of Russia" wanted to get information about Clinton to Trump's team. Source: Internet
One of Deripaska's companies, Sea Chaika Corporation, appears in the Panama Papers and paid $85,000 (£66,000) to Waldman's accounts in 2010. Source: Internet