The order was issued after intelligence reports warned that saboteurs aligned with Tehran were listed as targets at the Bahrain Royal Naval Command and the United Kingdom Embassy. This is followed by an increase in US forces in the region in response to last week's attack on Saudi Arabia, which knocked out almost half of its oil supplies. Several thousand additional US troops will take on a 'defense role' both in Saudi Arabia and at the request of the UAE.
The USS Nitze, an Arly Burke-class destroyer, will be deployed along the coast of Saudi Arabia to fill the gap in the country's air defenses, allowing nearly 30 drones and cruise missiles to strike the Abqaiq oil facility and the Hurais oil field.
Iranian-backed Iranian rebels initially claimed responsibility, but US intelligence cites Tehran as being behind the attacks.
The incidents last week, combined with an Iranian attack on a US spy drone in June, "represent a dramatic escalation of Iranian aggression," said US Secretary of Defense Mark Esper.
Secretary of State Mike Pompeo called it an "act of war."
During a visit to the White House by Australian Prime Minister Scott Morrison this weekend, US President Donald Trump announced that it would be easy to knock out 1
"I could do it right here," he said, speaking from the Oval Office. "Everything is ready. I could do it right here and then you will have a nice big story to report.
"We all hope, and Scott hopes we all pray that we do not use nuclear energy."
However, he added, "what shows strength would be to show some restraint. "
The commander of Iran's elite Islamic Revolutionary Guards Corps, General Kassem Solemimani, responded by saying that any country attacking the Islamic Republic would see its territory become a" major battlefield ".
Despite the rhetoric and attempts to rally an international "coalition of the wishing" against the Islamic Republic, Mr. Trump remains deeply inclined to engage militarily with Iran.
The president dismisses hawkish national security adviser John Bolton, who seeks a firmer approach against Iran, saying his former nominee has made some "very big mistakes".
At the time, Mr Trump said he wanted to meet with Iranian President Hassan Rouhani at the UN General Assembly.
While the attack on Saudi Arabia completes any prospect for this meeting, the United States' primary ambition is to increase "maximum pressure" by imposing more sanctions on Tehran.
Speaking during the same meeting with Mr Morrison, Mr Trump said: "We have just sanctioned the Iranian National Bank," adding that he prefers an economic solution over a military one.
US Treasury Secretary Stephen Munchin told reporters that the bank was the last source of funds in Tehran, saying: "We have now cut off all funds for Iran."
As the US argues that the tactic works, last night experts questioned why an economically weak regime should continue to act so militarily.
The failure of Trump to support military rhetoric with actions harmed his credibility, according to regional expert Dr. Albert Wolf, Dean of the College of International Studies at the American University of Kurdistan.
In Bahrain, the SAS team arrived in the capital Manama last week and will work with the Bahrain Special Forces Command, their elite counter-terrorism forces, whose officers have been trained in the UK.
The team joined 25 soldiers from the Royal Regiment of the 1st Battalion of the Princess of Wales sent to the kingdom to replace the Royal English Regiment in defense duties.
Their task will be to protect the Royal Naval Base, HMS Jufair, which is home to 300 naval personnel, as well as high-command naval commandos.