The United States is sending nearly 3,000 more Army troops to the Middle East as reinforcements in the volatile aftermath of the killing of an Iranian general in a strike ordered by President Donald Trump.

Defense officials – speaking Friday on the condition of anonymity – announced the decision that was not yet announced by the Pentagon, and added that the troops are from the 82nd Airborne Division at Fort Bragg, North Carolina.

They are in addition to about 700 soldiers from the 82nd Airborne who deployed to Kuwait earlier this week after the storming of the US Embassy compound in Baghdad by Iran-backed militiamen and their supporters.

The additional troop deployments reflect concerns about potential Iranian retaliatory action. But they also run counter to Trump’s repeated push to extract the United States from Mideast conflicts.

Trump has repeatedly called for withdrawing from Syria and Afghanistan, but over the past year he has greatly increased U.S. troop totals in the Middle East.

More broadly, some congressional Democrats and national security analysts questioned whether the Trump administration is prepared for Iranian retaliation and the prospect of political backlash in Iraq, where American troops are working with Iraqi forces in a sometimes tense partnership against the Islamic State extremist group.

The Pentagon said it wants to sustain that work, but some Iraqi leaders said it might be time for U.S. troops to leave.

On Wednesday at Fort Bragg in North Carolina, paratroopers from the 2nd Battalion, 504th Parachute Infantry Regiment, 1st Brigade Combat Team, 82nd Airborne Division boarded C-17 Globemaster aircraft transports bound for Kuwait. They have since arrived.

The official account for the 82nd Airborne, America’s Division tweeted on Wednesday: ‘Early this morning more than 650 All American Paratroopers and equipment began their deployment to the @CENTCOM (U.S. Central Command) area of operations.

‘This is why we exist. Your @Strike_Hold (1st Brigade Combat Team, 82nd Airborne Division) Paratroopers have trained and prepared for events like these. @OIRSpox (spokesperson for Operation Inherent Resolve), they are on the way.’

Iran-backed militiamen withdrew from the U.S. Embassy compound in Baghdad on Wednesday after two days of clashes with American security forces, but U.S.-Iran tensions remain high and could spill over into further violence.

‘At the direction of the Commander in Chief, I have authorized the deployment of an infantry battalion from the Immediate Response Force (IRF) of the 82nd Airborne Division to the U.S. Central Command area of operations in response to recent events in Iraq,’ Secretary of Defense Mark T. Esper said in a statement.

‘Approximately 750 soldiers will deploy to the region immediately, and additional forces from the IRF are prepared to deploy over the next several days,’ Esper said.

‘This deployment is an appropriate and precautionary action taken in response to increased threat levels against U.S. personnel and facilities, such as we witnessed in Baghdad today. The United States will protect our people and interests anywhere they are found around the world,’ he continued.

On Tuesday, some 6,000 pro-Iran Shiite militia fighters stormed U.S. embassy in Baghdad, set walls ablaze and chanted ‘Death to America!’ in a violent retaliation for American air strikes. There were no reports of American casualties, and the attack was repelled after 100 Marines rapidly reinforced the compound.

The attack on the embassy also prompted U.S. Secretary of State Mike Pompeo to delay a European and Central Asian trip.

Pompeo called the attack an act of ‘state-sponsored terrorism’ in an interview with CBS News, and President Donald Trump vowed that the Iranian government will be held ‘fully responsible’ for the attack.

Pompeo said in a statement that the attack was ‘orchestrated by terrorists’ and ‘abetted by Iranian proxies’, tweeting pictures that he said showed US-designated terrorists with Iranian ties outside the embassy.

In an orchestrated assault, hundreds of militiamen and their supporters broke into the embassy compound, destroying a reception area, smashing windows and spraying graffiti on walls to protest U.S. airstrikes against an Iran-backed militia over the weekend that killed 25 fighters.

The U.S. blamed the militia for a rocket attack on an Iraqi military base in the northern city of Kirkuk last week that killed a U.S. contractor.

The protesters set up a tent camp overnight and on Wednesday set fire to the reception area and hurled stones at U.S. Marines guarding the compound, who responded with tear gas. There were no injuries on either side and no American staff were evacuated from the compound.

The Popular Mobilization Forces, an umbrella group of state-allied militias – many backed by Iran – called on its supporters to withdraw in response to an appeal by the Iraqi government, saying ‘your message has been received.’

By late afternoon the tents had been taken down and the protesters relocated to the opposite side of the Tigris River, outside the so-called Green Zone housing government offices and foreign embassies. U.S. Apache helicopters circled overhead.

‘After achieving the intended aim, we pulled out from this place triumphantly,’ said Fadhil al-Gezzi, a militia supporter. ‘We rubbed America’s nose in the dirt.’ Trump has vowed to exact a ‘big price’ for an attack he blamed squarely on Iran.

Kataeb Hezbollah, the Iran-backed militia targeted by the U.S. airstrikes, initially refused to leave but later bowed to demands to disperse. The militia is separate from the Hezbollah militant group in Lebanon, though both are backed by Iran.

‘We don´t care about these planes that are flying over the heads of the picketers. Neither do we care about the news that America will bring Marines,’ said Mohammed Mohy, a spokesman for Kataeb Hezbollah. ‘On the contrary, this shows a psychological defeat and a big mental breakdown that the American administration is suffering from,’ he said, before withdrawing from the area.

The violence came as Iran and its allies across the region have faced unprecedented mass protests in recent months and heavy U.S. sanctions have cratered Iran’s economy.

Iraq has been gripped by anti-government protests since October fueled by anger at widespread corruption and economic mismanagement, as well as Iran’s heavy influence over the country’s affairs. Those protesters were not involved in the embassy attack.

The Pentagon sent an infantry battalion of about 750 soldiers to the Middle East. A U.S. official familiar with the decision said they would go to Kuwait.

Pompeo postponed a trip that was scheduled to start in Ukraine late Thursday so that he can monitor developments in Iraq and ‘ensure the safety and security of Americans in the Middle East,’ said State Department spokeswoman Morgan Ortagus.

Iran denied involvement in the attack on the embassy. Supreme Leader Ayatollah Ali Khamenei was quoted by media as saying that ‘if the Islamic Republic makes a decision to confront any country, it will do it directly.’

Iran later summoned the Swiss charge d’affaires, who represents American interests in Tehran, to protest what it said was war-mongering by U.S. officials.

Public consular operations at the embassy were suspended and future appointments cancelled, it said in a statement.

Tensions have steadily risen since Trump withdrew the U.S. from Iran’s 2015 nuclear deal with world powers and embarked on a campaign of maximum pressure through economic sanctions. Iran has responded by abandoning some of its commitments under the deal.

U.S. officials have blamed Iran for the sabotage of oil tankers in the Persian Gulf and a drone attack on Saudi oil facilities in September that caused a spike in world oil prices. But the Trump administration has not responded with direct military action, apparently fearing a wider conflict.

The U.S. has sent more than 14,000 additional troops to the Gulf region since May in response to concerns about Iranian aggression. At the time of the attack, the U.S. had about 5,200 troops in Iraq, mainly to train Iraqi forces and help them combat Islamic State extremists.

The U.S. and Iran have vied for influence over Iraq since the 2003 U.S.-led invasion that toppled Saddam Hussein. Iran has close ties to Iraq’s Shiite majority and major political factions, and its influence has steadily grown since then.

Iran helped to mobilize tens of thousands of mostly Shiite militiamen to battle the Islamic State group when it stormed across northern and western Iraq in 2014 as the armed forces collapsed. The U.S. and Iran both provided vital aid to Iraqi forces, who eventually declared victory over the extremists in December 2017.

The political influence of the Popular Mobilization Forces has risen in recent years, and their allies dominate the parliament and the government. That has made them the target of the anti-government protesters, who have attacked Iranian diplomatic missions and the local headquarters of parties affiliated with the militias across southern Iraq.

They have also set up a sprawling protest camp in central Baghdad, and for weeks have been trying to enter the Green Zone. Iraqi security forces have beaten them back with tear gas and live ammunition, killing hundreds.

The militiamen and their supporters, however, were able to quickly enter the Green Zone and mass in front of the embassy, with little if any resistance from authorities.

Iraq’s government vehemently condemned the airstrikes on the militia, saying it violated national sovereignty. But Iran and its allies might have also seen the attack as a way of diverting attention from the anti-government protests.

‘Iran has been trying to provoke the U.S. into helping it solve its Iraq problem,’ said the Crisis Group, an international think tank. ‘The Trump administration, by responding to the attacks in Kirkuk and elsewhere with airstrikes, has obliged.’