us tend quite selective give phone number would instantly assume president unite state would guard personal cell number great deal secrecy well apparently case.in yet another break convention president donald trump hand personal cellphone number world leaders tell call directly raise security concern white house even conversations world leaders still little hypocritical president trump use personal phone spend great deal time energy berate hillary clinton use private email server secretary state claim practice leave vulnerable send confidential information lead chant lock trump supporters presidential campaign.according former current unnamed us officials president trump urge leaders mexico canada call personal number however canadian prime minister justin trudeau take offer furthermore accord unnamed french official trump also swap phone number emmanuel macron president france two speak immediately macron victory early may.although seem crazy think world leaders might hit cells leader-to-leader call generally follow standard protocol case us presidents call usually place one several secure phone line include white house situation room oval office presidential limousine accord national security experts trump use cellphone call put extremely high risk listen particularly foreign governments speak open line open line mean ability monitor conversations say derek chollet former pentagon adviser national security council official someone try spy everything say presume others listen perfect example practice edward snowden leak us monitor german chancellor angela merkel cell back 2013 despite germany american ally macron leader country get cellphone number president unite state reasonable assume hand right intel service say ashley deeks law professor university virginia former assistant legal adviser political-military affairs u.s. state department.giving personal number new york city real estate mogul obviouslyly common practice trump probably find another way make deal president unite states.featured image via brian blanco/getty image really wise president give personal cellphone number