Democratic co-sponsor of new bill says it's specifically designed not to interfere with landmark nuclear agreement.
The naval commanders warned that a future incident could lead to an armed clash.
Despite sanctions and threats from the U.S., Iran’s Revolutionary Guard continues to test ballistic missiles in the country’s central desert.
A U.S. official told Reuters on Monday that multiple fast-attack vessels from the Revolutionary Guard had come within 600 yards of a U.S. tracking ship, forcing it to change direction.
The FBI investigator, credited with busting Russian and Italian mobsters, was working for a private firm in Iran when he disappeared 10 years ago.
The official, speaking on condition of anonymity, said the boats came within 600 yards of the USNS Invincible, a tracking ship, and stopped. The Invincible and three ships from the British Royal Navy accompanying it had to change course.
Israel tried for several years to press Putin to delay the shipment of the S-300, which is capable of simultaneously tracking and striking multiple targets.
It isn't the first dispatch sent by the former Iranian president, who can count Presidents George W. Bush and Barack Obama among his pen pals.
Navy ships, submarines and helicopters will take part in the drills across an area of about 772,000 square miles after White House put Tehran 'on notice.'
Asghar Farhadi, whose film 'The Salesman' was nominated for best foreign film, said he would not be attending the ceremony.