WASHINGTON — President Donald Trump arrives at an awkward moment for his presidency on Friday as the U.S.-Israel war against Iran reaches the six-month mark, a notable milestone for a conflict that the Republican leader repeatedly assured Americans would be a “little excursion” lasting a matter of weeks. The war isn't over, though Trump claims that through bombs and blockade, he has already devastated Iran’s leadership, military and economy. And this week his administration said it would turn its focus to increasing economic pressure — rather than military action — to try to finish off Iran. The shifting strategy centers on threats to punish any country or entity that continues to conduct business with Tehran. The turn to using sanctions as the cudgel of choice comes as the administration weighs diminished munitions stockpiles after months of war, sparking concerns that the prolonged conflict could undermine U.S. military readiness in other parts of the globe. As the conflict grinds on, Trump's talk of finding a quick end to the war also appears to be fading. He stressed this