Meanwhile, Russian military intelligence services said there's a flurry of activity by U.S. armed forces near Iran's borders, Russian news and information agency Novosti reported Tuesday.
The news agency also said the U.S. naval presence in the Persian Gulf had reached a level not seen since shortly before the invasion of Iraq in March 2003, although a representative of the U.S. Fifth Fleet said ships will keep out of Iranian waters, Novosti reported Wednesday
Any skirmish in the Persian Gulf, particularly if Iran was to threaten or actually shut in some of its oil, could become of "matter of how much past $100 oil we get," said Fimat's Kilduff. In that case, "look for an area north of $110, $120."