Iran raised the prospect on Tuesday of sending military ships close to the United States' Atlantic coast, in what would be a major escalation of tensions between the long-standing adversaries.

"Like the arrogant powers that are present near our marine borders, we will also have a powerful presence close to American marine borders," the head of the Navy, Rear Admiral Habibollah Sayyari said, according to the official IRNA news agency.

Speaking at a ceremony marking the 31st anniversary of the start of the 1980-1988 war with Iraq, Sayyari gave no details of when such a deployment could happen or the number or type of vessels to be used.