washington americans look clarity lead republican presidential candidate donald trump world view might come away disappoint thursday night debate ask trust national security trump warm word three men world view differ one another diverge sharply key issue trump former diplomat richard haass retire u.s. army officer gen. jack keane col. jack jacobs mention eclectic trio little satisfy mount call announce list campaign foreign policy advisors traditionally take top post elect debate comment appear word admiration three men signal form nucleus national security team trump reject significant swath party foreign policy establishment almost 110 republican foreign policy veterans sign letter pledge oppose trump say proposals would undermine u.s. security three men trump mention different view 2003 iraq invasion arguably controversial foreign policy decision generation trump say oppose war call disastrous intervention accuse administration president george w. bush mislead americans keane defense hawk help devise 2007 iraq surge move send tens thousands u.s. troop iraq quell sectarian strife serve informal consultant bush keane tell reuters friday never speak trump keane chairman board institute study war think tank say brief seven presidential candidates party decline identify comment publicly candidate proposals policies never do say haass centrist foreign policy thinker president council foreign relations think tank see fixture u.s. foreign policy establishment state department policy plan director time iraq invasion write late largely war believe iraq war haass say 2009 interview national public radio trump propose bar muslims enter unite state demand mexico fund wall control illegal immigration across u.s. border praise russian president vladimir putin call build u.s. military also say want ally pick burden conflict syria iraq vow destroy islamic state spokeswoman haass iva zoric say brief trump foreign policy august 2015. tweet late thursday haass write endorse candidates do offer brief candidates brief several emocrat epublican alike jacobs frequent television commentator medal honor high u.s. military decoration vietnam war express skepticism regard large scale american military interventions middle east suggest waterboarding interrogation technique many call torture trump endorse ineffective trump soften stance torture friday say would order u.s. military break international laws treat terrorism suspect jacobs critical political leaders send american troop missions without consider well-defined strategy jacobs write 2007 criticize post-invasion plan iraq include foolish decision disband iraqi army press thursday night identify foreign policy advisers trump say haas keane excellent like jacobs much jacobs decline comment whether help trump many people think really excellent end go decision national security matter trump say keane appear frequently congressional committees television accuse u.s. president barack obama act forcefully help moderate libya syria call obama 2011 withdrawal u.s. combat force iraq absolute strategic failure charge lack strategy contain spread islamic state help moderate region keane tell reuters strict rule join campaign advisor endorse political candidates edit stuart grudge article fund part sap independently create reuters editorial staff sap editorial involvement creation production foreign policy thinkers praise trump divergent view