President Trump Names New National Security Adviser.

Lt.Gen McMaster, seated to the left of President Donald Trump.

President Donald Trump on Monday selected Army Lt. Gen. H.R. McMaster to be his national security adviser.

 McMaster, an active service member, will replace retired Lt. Gen Michael Flynn. Flynn resigned last week after confirmation he’d spoken about U.S. sanctions against Russia with that country’s ambassador ahead of Trump’s inauguration. 

He will be the first active serving military general to occupy this post since President Reagan.