Kuwait said on Tuesday that Iran launched a failed attack earlier this month on an island where China is helping to build a port in the Gulf Arab country. The accusation came just hours before President Trump was to depart for Beijing on a high-stakes visit over the Iran war and other issues.

The U.S. proposal would have reopened a key shipping route in exchange for temporary easing of sanctions and talks toward a deal.

"But the joint staff team and the comptroller team are constantly looking at that estimate, and so now we think it's closer to 29," he said -- citing updated "repair and replacement of equipment costs...