WASHINGTON — Defense Secretary Pete Hegseth faced tough questions Tuesday from Republican and Democratic lawmakers about the Trump administration’s end game for the Iran war, the cost of the conflict and its impact on diminishing U.S. weapons stockpiles. While the Pentagon chief softened his tone from hearings before Congress nearly two weeks ago, notably avoiding the same pointed criticism of lawmakers, he got far more pushback from members of his own Republican Party about the levels of the U.S. munitions used in the Iran war and President Donald Trump’s intense criticism of traditional allies, including NATO countries, for not taking part in the conflict. “I take issue with the characterization that munitions are depleted in a public forum,” Hegseth told House lawmakers. “That’s not true.” Even as he insisted that the U.S.…