WASHINGTON - The United States on Thursday blacklisted a Saudi man who it said was the Syria-based deputy leader of Islamic State's affiliate in Saudi Arabia, the State Department said in a statement. Mubarak Mohammed A Alotaibi, a 31-year-old Saudi citizen, was named a 'Specially Designated Global Terrorist,' the State Department said. The action freezes any assets he might have in the United States, and Americans are not allowed to deal with him.