By Rami Ayyub and Maayan Lubell JERUSALEM, June 15 (Reuters) - Benjamin Netanyahu bet that his joint war alongside Donald Trump would topple Iran's clerical rulers and bolster himself ahead of elections at home, as the architect of a U.S.-Israeli alliance that would reshape the Middle East. Instead, Israel's longest-serving prime minister is on a collision course with Trump as the U.S. president seeks to extricate himself from the war, with both men's goals unmet and Israeli military operations tied down in Lebanon.