On 27 December 2011, Iranian Vice President Mohammad-Reza Rahimi threatened to cut off oil supply from the Strait of Hormuz should economic sanctions limit, or cut off, Iranian oil exports.
Also on that same date, the U.S. aircraft carrier USS John C. Stennis (CVN-74) concluded a four-day port visit to Jebel Ali, United Arab Emirates, and returned to the North Arabian Sea in support of coalition ground operations in Afghanistan via the Strait of Hormuz.

To coincide with this threat, Iran carried out Velayat 90, a 10-day military exercise in international waters near the Strait of Hormuz.
The United States countered this exercise with an increased naval presence in and around the Persian Gulf, with the aircraft carrier John C. Stennis pictured by Iranian reconnaissance in the Persian Gulf.
A U.S. Fifth Fleet spokeswoman said in response that the Fleet was "always ready to counter malevolent actions", whilst Admiral Habibollah Sayari of the Iranian navy claimed that cutting off oil shipments would be "easy".
Security analysts in the West were largely unconcerned by Iran's capabilities to disrupt trade in the area.

On 3 January 2012, following the end of Velayat 90, the Iranian Army chief of staff, General Ataollah Salehi, was quoted by the state news agency IRNA as warning the United States to not deploy the Stennis back to the Persian Gulf.
Iranian Army chief Ataollah Salehi said the United States had moved an aircraft carrier out of the Gulf because of Iran's naval exercises, and Iran would take action if the ship returned.
 "Iran will not repeat its warning...the enemy's carrier has been moved to the Gulf of Oman because of our drill.
 I recommend and emphasize to the American carrier not to return to the Persian Gulf", he said.

On 4 January 2012, Fars News Agency reported that a bill was being prepared for the Iranian Parliament to bar foreign naval vessels from entering the Persian Gulf unless they receive permission from the Iranian navy, with Iranian lawmaker Nader Qazipour noting: "If the military vessels and warships of any country want to pass via the Strait of Hormuz without coordination and permission of Iran’s navy forces, they should be stopped by the Iranian armed forces."
Also, Iranian Defense Minister Ahmad Vahidi reiterated that "transnational forces" have no place in the Persian Gulf region.

The U.S. Navy spokesman Commander Bill Speaks quickly responded that deployment of U.S. military assets would continue as has been the custom stating: "The U.S. Navy operates under international maritime conventions to maintain a constant state of high vigilance in order to ensure the continued, safe flow of maritime traffic in waterways critical to global commerce."

On 7 January 2012, the United Kingdom announced that it would be sending the Type 45 destroyer HMS Daring to the Persian Gulf.
Daring, which is the lead ship of her class is claimed to be one of the "most advanced warships" in the world, and will undertake its first mission in the Persian Gulf.
The British Government however have said that this move has been long-planned, as Daring will replace another Armilla patrol frigate.
During this maiden deployment, Daring operated with Carrier Strike Group One in the Persian Gulf and Carrier Strike Group Nine in the North Arabian Sea.

On 9 January 2012, Iranian Defense Minister Ahmad Vahidi denied that Iran had ever claimed that it would close the Strait of Hormuz, saying that "the Islamic Republic of Iran is the most important provider of security in the strait...if one threatens the security of the Persian Gulf, then all are threatened."
However, Vahidi did reiterate that "transnational forces" have no place in the Persian Gulf region.
Also, on 9 January 2012, Carrier Strike Group One, led by the carrier Carl Vinson, joined Carrier Strike Group Three, led by the Stennis, in the North Arabian Sea.
 Carrier Strike Group Nine, led by the carrier Abraham Lincoln, was en route to the Arabian Sea amid rising tensions over the Strait of Hormuz.

The Iranian Foreign Ministry confirmed on 16 January 2012 that it has rece
On 27 December 2011, Iranian Vice President Mohammad-Reza Rahimi threatened to cut off oil supply from the Strait of Hormuz should economic sanctions limit, or cut off, Iranian oil exports. Also on that same date, the U.S. aircraft carrier USS John C. Stennis (CVN-74) concluded a four-day port visit to Jebel Ali, United Arab Emirates, and returned to the North Arabian Sea in support of coalition ground operations in Afghanistan via the Strait of Hormuz.
To coincide with this threat, Iran carried out Velayat 90, a 10-day military exercise in international waters near the Strait of Hormuz. The United States countered this exercise with an increased naval presence in and around the Persian Gulf, with the aircraft carrier John C. Stennis pictured by Iranian reconnaissance in the Persian Gulf. A U.S. Fifth Fleet spokeswoman said in response that the Fleet was "always ready to counter malevolent actions", whilst Admiral Habibollah Sayari of the Iranian navy claimed that cutting off oil shipments would be "easy". Security analysts in the West were largely unconcerned by Iran's capabilities to disrupt trade in the area.
On 3 January 2012, following the end of Velayat 90, the Iranian Army chief of staff, General Ataollah Salehi, was quoted by the state news agency IRNA as warning the United States to not deploy the Stennis back to the Persian Gulf. Iranian Army chief Ataollah Salehi said the United States had moved an aircraft carrier out of the Gulf because of Iran's naval exercises, and Iran would take action if the ship returned.  "Iran will not repeat its warning...the enemy's carrier has been moved to the Gulf of Oman because of our drill.  I recommend and emphasize to the American carrier not to return to the Persian Gulf", he said.
On 4 January 2012, Fars News Agency reported that a bill was being prepared for the Iranian Parliament to bar foreign naval vessels from entering the Persian Gulf unless they receive permission from the Iranian navy, with Iranian lawmaker Nader Qazipour noting: "If the military vessels and warships of any country want to pass via the Strait of Hormuz without coordination and permission of Iran’s navy forces, they should be stopped by the Iranian armed forces." Also, Iranian Defense Minister Ahmad Vahidi reiterated that "transnational forces" have no place in the Persian Gulf region.
The U.S. Navy spokesman Commander Bill Speaks quickly responded that deployment of U.S. military assets would continue as has been the custom stating: "The U.S. Navy operates under international maritime conventions to maintain a constant state of high vigilance in order to ensure the continued, safe flow of maritime traffic in waterways critical to global commerce."
On 7 January 2012, the United Kingdom announced that it would be sending the Type 45 destroyer HMS Daring to the Persian Gulf. Daring, which is the lead ship of her class is claimed to be one of the "most advanced warships" in the world, and will undertake its first mission in the Persian Gulf. The British Government however have said that this move has been long-planned, as Daring will replace another Armilla patrol frigate. During this maiden deployment, Daring operated with Carrier Strike Group One in the Persian Gulf and Carrier Strike Group Nine in the North Arabian Sea.
On 9 January 2012, Iranian Defense Minister Ahmad Vahidi denied that Iran had ever claimed that it would close the Strait of Hormuz, saying that "the Islamic Republic of Iran is the most important provider of security in the strait...if one threatens the security of the Persian Gulf, then all are threatened." However, Vahidi did reiterate that "transnational forces" have no place in the Persian Gulf region. Also, on 9 January 2012, Carrier Strike Group One, led by the carrier Carl Vinson, joined Carrier Strike Group Three, led by the Stennis, in the North Arabian Sea.  Carrier Strike Group Nine, led by the carrier Abraham Lincoln, was en route to the Arabian Sea amid rising tensions over the Strait of Hormuz.
The Iranian Foreign Ministry confirmed on 16 January 2012 that it has rece
2011–12 Strait of Hormuz dispute