U.S. President Donald Trump and Saudi Arabia's King Salman bin Abdulaziz Al Saud (R) attend the Arab Islamic American Summit in Riyadh, Saudi Arabia May 21, 2017. REUTERS/Jonathan Ernst

WASHINGTON (Reuters) - The acting U.S. defense secretary has authorized the deployment of U.S. military personnel and resources to Saudi Arabia, the Pentagon said on Friday, adding the move would provide “an additional deterrent” in the face of “emergent, credible threats.”

Riyadh had previously said it had approved hosting U.S. forces to boost regional security and stability.