Officials said the U.S. military was ordered to divert a shipment of smart bunker-buster bombs from Israel to a military base in Diego Garcia. They said the shipment of 387 smart munitions had been slated to join pre-positioned U.S. military equipment in Israel Air Force bases.

“This was a political decision,” an official said.

In 2008, the United States approved an Israeli request for bunker-busters capable of destroying underground facilities, including Iranian nuclear weapons sites. Officials said delivery of the weapons was held up by the administration of President Barack Obama.