Unlike most of his predecessors, Trump was a presidential candidate with no prior political or military experience. His strong affiliation with the world of money, business, and media means that his world-view is transactional and largely business-oriented.
An America First policy will alienate allies and embolden rivals. In the process, it will damage United States commercial interests, undermining the institutions created post-World War II.
Trump's spontaneity, unpredictability and informality adds to the ambiguity of his approach to foreign policy and could have profound geopolitical implications. Trump’s habit of issuing contradictory statements on the campaign trail make it tough to predict what he would do as President of the United States.
A Trump presidency could make the United States, its citizens and its assets the single most attractive target for terrorist groups such as ISIS due to his anti-Muslim rhetoric.