PATRICIA ZENGERLE THE U.S. Senate's Republican leader has urged lawmakers to vote against a resolution, expected as soon as this week, to block President Donald Trump's $23 billion arms sale to the United Arab Emirates, which he called a crucial partner in the first against terrorists. "It's a little baffling to suggest that, now of all times, a protest gesture with no chance of obtaining a veto-proof majority is a valuable use of the Senate's time. But above and beyond that, the strategic realities dictate that Congress should not stand in the way of this sale," Senate Majority Leader Mitch…