WASHINGTON—The Obama administration has quietly drawn up plans to provide a key Persian Gulf ally with thousands of advanced "bunker-buster" bombs and other munitions, part of a stepped-up U.S. effort to build a regional coalition to counter Iran.
The proposed sale to the United Arab Emirates would vastly expand the existing capabilities of the country's air force to target fixed structures, which could include bunkers and tunnels—the kind of installations where Iran is believed to be developing weapons.
The move represents one way the Obama administration intends to keep Iran in check, as it struggles to find adequate backing for ...
