• A nightmare scenario involving a potential armed showdown between Saudi Arabia and Iran would put America and President Trump in a high-stakes dilemma. • U.S. policy performs best when focused on a longer-term strategic purpose. In the Middle East, the approach must be on preventing any new conflicts, ending civil wars and unlocking the region's human potential while opposing extremism, writes Atlantic Council President and CEO Fred Kempe. • The U.S. and its Western allies should leverage the post-Khashoggi crisis to achieve some good in the Middle East, Kempe writes....