evidence: Gen. David H. Berger is the right person to lead the Marine Corps in this era of great power competition with Russia and China, Acting Defense Secretary Dr. Mark T. Esper said at a ceremony in which Berger became the 38th commandant of the Marine Corps. Berger succeeded Gen. Robert B. Neller, who passed command to Berger at Marine Barracks Washington today. As the commandant, Berger is now a member of the Joint Chiefs of Staff. [...] Esper added that Berger has proven throughout his career that he possesses the intellect, the stamina and the courage needed to succeed in this demanding position.