Two months into the war in Iran, President Trump is grappling with a conflict that has become costly, unpopular and uncertain. The Pentagon estimates the war has cost 25 billion dollars so far, while energy markets remain unsettled and the Strait of Hormuz is effectively closed, pushing fuel prices higher. Despite earlier predictions of a swift resolution, no clear breakthrough has emerged and Iran’s government remains intact.

Mr. Trump has defended the war as necessary to prevent Iran from obtaining a nuclear weapon, even as his public statements about negotiations and possible military action have shifted. He has alternated between suggesting a deal is close and expressing doubt that any agreement would be acceptable. The administration has maintained a blockade on Iranian shipping, and both sides appear locked in a tense standoff with the possibility of renewed strikes.

The conflict has strained relationships with allies and raised legal and political concerns at home. Mr. Trump has not sought congressional authorization beyond the statutory deadline, arguing it is unnecessary, even as some members of his own party question the cost and strategy. With public opinion polls showing limited support and midterm elections approaching, the war poses mounting political and economic risks for the president.