Trump has been giving his cellphone number to world leaders, and experts say it's an eavesdropping minefield

President Donald Trump has been handing out his cellphone number to world leaders and urging them to call him directly, an unusual invitation that breaks diplomatic protocol and is raising concerns about the security and secrecy of the U.S. commander in chief's communications. ...
http://www.businessinsider.com/ap-trump-to-world-leaders-call-me-maybe-on-my-cellphone-2017-5