US President-elect Donald Trump has announced key Cabinet picks, with the post of National Security Adviser going to his military Adviser Michael Flynn. Mr Flynn is a retired United States Army Lieutenant General and former director of the Defence Intelligence Agency. Flynn served as Mr Trump's top military advisor during the Presidential campaign.<br/><br/>Mr Trump chose Republican Senator Jeff Sessions as his Attorney General and Congressman Mike Pompeo as Director of the Central Intelligence Agency (CIA), both known for being staunch conservatives. Flynn would not require US Senate confirmation, unlike Sessions and Pompeo.<br/><br/>