Iran poses an acute threat to oil infrastructure across the Middle East, potentially allowing it to extort concessions from world powers.    

Diplomacy could well come to occupy center stage for a president who relishes summitry.

The Democratic and Republican presidential contenders have begun defining their approach to major foreign policy issues as they jockey for position in their parties’ primaries.

The Democratic field could touch on a number of foreign policy issues, from climate change to Iran, during its first prime-time sparring session.