At around 5:30 pm Moscow time on August 23, the Embraer Legacy 600 private business jet took to the skies. Launching from an airport near the Russian capital, the 13-seater plane, which has a white body and blue tail, has been linked to Yevgeny Prigozhin, the head of the brutal Russian mercenary outfit Wagner Group.At 5:46 pm, once the plane was clear…