Ukraine unveiled a criminal case on Friday against the boss of Russia's Wagner mercenary company, and promised to track down and prosecute the company's fighters who try to flee abroad.
Wagner, run by businessman Yevgeny Prigozhin, an ally of President Vladimir Putin, has recruited thousands of fighters, including convicts from Russian prisons, to wage war in Ukraine. Prigozhin says his group is pivotal in recent battles in the east of Ukraine, among the bloodiest of the war.
