Iran's Revolutionary Guards on Thursday warned the United States against its naval presence in the Gulf as they received 110 new combat vessels. "We announce today that wherever the Americans are, we are right next to them, and they will feel our presence even more in the near future," the Guards' navy chief Rear Admiral Alireza Tangsiri said during a ceremony in southern Iran. Iran and the United States have appeared to be on the brink of an all-out confrontation twice in the past year.