Barraged by Iranian attacks and questioning the value of security ties with the United States, nations in the Gulf have turned to Ukraine, Australia and Italy for help.

U.S. officials say the country’s weapons have been diminished, slowing its attacks on Gulf nations and Israel. Iran may also be holding some weapons in reserve in case the conflict is prolonged.

Since the American-Israeli attack on Iran began, at least 12 civilians have been killed in oil-rich Gulf countries. All but one of them were foreign nationals.

Iran named Mojtaba Khamenei, a son of Ayatollah Ali Khamenei, as his father’s successor. The Pentagon announced the death of a seventh U.S. service member.

Another American service member died in the war with Iran, the Pentagon said on Sunday, bringing the number of American troops killed in the conflict to seven. The service member died after being seriously injured on March 1, when Iran struck a Saudi military base where American troops were stationed, U.S. Central Command said in a statement.

The ordered departure of U.S. employees in the kingdom indicates that senior diplomats are bracing for a possible surge in violence in the war with Iran, officials say.