Since May, the one-year anniversary of the US leaving the 'Iran Deal,' Tehran has been seeking ways to pressure the world to stop America’s sanctions.
Iran’s dominance of the Strait of Hormuz has never satisfied its arch-enemy Saudi Arabia.
A British security source said the focus of the new mission would be protecting the security of shipping and Britain would not be joining U.S. sanctions against Iran.
"It carried 700,000 liters of fuel. Seven sailors onboard of the tanker, who are from different nationalities, were detained," TV quoted IRGC commander Ramezan Zirahi as saying.
Always aware of its potential power, Iran has from time to time chosen to demonstrate its muscle.
Iran has already seized a UK tanker in response and London has said it will attempt to protect its ships from more Iranian harassment.
The UK will also form a European-led maritime mission to support safe passage of ships in the region. Hunt stressed that this would not be part of the “US maximum pressure policy on Iran.”
"The Iranian regime has a long history of lying ... I would take with a significant grain of salt any Iranian assertion about actions that they've taken."
Tracking data showed that the tanker drifted off into Iranian waters after 11 p.m. on Saturday and stopped transmitting its location on July 13.