General James 'Mad Dog' Mattis

President-elect Trump names his secretary of defence; 4 cities announce they will ban diesel vehicles by 2025; shock result in Gambia election as incumbent Yahya Jammeh is defeated.

(Picture: General James Mattis testifies before the Senate Armed Services Committee hearing on Capitol Hill in Washington July 27, 2010, on his nomination to be Commander of U.S. Central Command. Credit: REUTERS/Yuri Gripas/File Picture)