Republican President Donald Trump won election in 2016 promising to put "America First," overturn what he said were unfair trade deals and force U.S. allies to pay more toward joint defense measures.

Less than a month before the election, U.S. President Donald Trump's abrupt vow to bring home troops from Afghanistan by year-end is a sign of how he may feel increasingly unchained to push through a foreign policy "wish list" he hopes could appeal to voters,

Voters will not just be choosing between two candidates; they will opt for one of two divergent positions on foreign policy and defence