Trump frustrated at lack of ally support...

President Trump said Monday he is keeping a close watch on which countries help the U.S. break Iran’s chokehold on the Strait of Hormuz and reopen the critical passage to oil traffic.

At a White House press conference, Mr. Trump vented his frustration at countries that were skeptical of sending naval assets to the region to help U.S. forces reopen the strait, through which at least 20% of the world…