Analysis-Trump heads into midterms short on foreign policy wins

By Humeyra Pamuk, Andrea Shalal and Steve Holland WASHINGTON, Aug 22 (Reuters) - With the Iran war now at a costly standoff and crises from Ukraine to Gaza still unresolved, President Donald Trump's ambitious foreign policy agenda appears stuck as he heads into November's midterm elections. The setbacks are striking for a president who returned to office last year promising to be a "peacemaker" and made resolving international conflicts a centerpiece of his second-term agenda.