Nearly 90% of U.S. House of Representatives members have signed a letter urging the Trump administration to increase its diplomatic action at the United Nations to renew an arms embargo on Iran, congressional sources said on Thursday. In a rare show of bipartisanship, at least 382 of the 429 members of the Democratic-controlled House - Democrats and Republicans - have signed the letter to Secretary of State Mike Pompeo urging him to work with U.S. allies and partners to extend the embargo, as well...