Three American soldiers were killed in a drone attack in Jordan at a US military base known as Tower 22, near the Syrian and Iraqi borders. Here's what we know about the attack.

Iran is claiming that accusations of its involvement in an attack that left three U.S. service members dead in Jordan over the weekend are "baseless." Iranian foreign ministry spokesperson Nasser Kanaani also claimed that "resistance groups" in the region do not take orders from Iran, according to Reuters. The remarks come after three American service members were killed and other were wounded in a drone attack near the Syrian border over the weekend. "While we are still gathering the facts of this attack, we know it was carried out by radical Iran-backed militant groups operating in Syria and Iraq," President Biden said in response to the strike. Some Republicans have pressed Biden to authorize stronger action against Iran, with members of both parties concerned about the safety of U.S. troops overseas.

Iran has denied involvement in a drone attack in Jordan that killed three US military personnel and injured dozens of others, state media has reported. US President Joe Biden and UK Foreign Secretary David Cameron have blamed Iran-backed groups for Sunday's attack near the border with Syria. "As we have clearly stated before, the resistance groups in the region are responding [to] the war crimes and genocide of the child-killing Zionist regime and… they do not take orders from the Islamic Republic of Iran," Iranian Ministry of Foreign Affairs spokesman Nasser Kanaani was quoted saying by IRNA on Monday. "These groups decide and act based on their own principles and priorities as well as the interests of their country and people." Kanaani said claims of Iranian involvement were motivated by "specific political goals to reverse the realities of the region" and were "influenced by third parties, including the child-killing Zionist regime".

This was the day that President Biden and his team had feared for more than three months, the day that relatively low-level attacks by Iranian proxy groups on American troops in the Middle East turned deadly and intensified the pressure on the president to respond in kind. With three American service members killed and two dozen more injured by a drone in Jordan, Mr. Biden must decide how far he is willing to go in terms of retaliation at the risk of a wider war that he has sought to avoid ever since the Oct. 7 terrorist attack by Hamas touched off the current Middle East crisis. Until now, the president had carefully calibrated his responses to the more than 150 attacks by Iranian-backed militias on American forces in the region since Oct. 7. He essentially ignored the majority that were successfully intercepted or did little to no damage while authorizing limited U.S. strikes focused mainly on buildings, weapons and infrastructure after attacks that were more brazen, most notably against the Houthis in Yemen who have targeted shipping in the Red Sea. The first deaths of American troops under fire, however, will require a different level of response, American officials said, and the president's advisers were in consensus about that as they consulted with him by secure videoconference on Sunday.

Three U.S. service members were killed and dozens may be wounded after an unmanned aerial drone attack on U.S. forces stationed in northeastern Jordan near the Syrian border, U.S. President Joe Biden and U.S. officials said on Sunday. Biden blamed Iran-backed groups for the attack, the first deadly strike against U.S. forces since the Israel-Hamas war erupted in October and sent shock waves throughout the Middle East. "While we are still gathering the facts of this attack, we know it was carried out by radical Iran-backed militant groups operating in Syria and Iraq," Biden said in a statement.

Three American troops were killed and dozens more were injured in northeast Jordan Sunday in an attack that marked a major escalation of tensions in the region. The Islamic Resistance in Iraq, a loose coalition of Iran-backed militant groups, is claiming responsibility for the deadly attack. Per an analysis from the Pro-Israeli Washington Institute for Near East Policy, the "Islamic Resistance in Iraq," is not a singular unit per se but rather, an umbrella term used to tie the operations of various Iran-backed proxies in Iraq and Syria. The report determined that an umbrella term obscures responsibility, making it more difficult to determine who is exactly responsible for attacks on U.S. targets. IRAN-BACKED MILITIA KILLS 3 US TROOPS JUST WEEKS AFTER BIDEN SAID TEHRAN KNOWS'NOT TO DO ANYTHING' This satellite photo from Planet Labs PBC shows a military base known as Tower 22 in northeastern Jordan, on Oct. 12, 2023.

Iran, also under pressure at home, has held back from its own strikes on Israeli or American sites in retaliation for the assassination of its senior Revolutionary Guard commanders, which it blames on Israel. Earlier this month, in its first direct reply, it focused its fire on what was regarded as a "soft target" when it hit what it called a base of Israel's Mossad agency in Iraqi Kurdistan.

The U.S. and Iraq held an initial round of formal talks about ending the U.S.-led military mission in the country to fight against the Islamic State. Iraqi Prime Minister Mohammed Shia al-Sudani announced Sunday that he had sponsored "the commencement of the first round of bilateral dialogue between Iraq and the United States of America to end the mission of the Coalition in Iraq," according to a report from The Associated Press. That statement was followed by one from the coalition, which said military officials will assess "the threat of Daesh (IS), operational and environmental requirements and Iraqi Security Force capabilities" and a higher military commission will "work to set the conditions to transition the mission in Iraq," according to the report. U.S. soldiers train at al-Asad air base in western Iraq. While the initial talks come as U.S. forces have been under increased attacks in the region, including a drone attack in Jordan Sunday that killed three U.S. service members and injured 25 more, U.S. officials say that plans to end the mission in Iraq were first discussed last year and that the timing of the talks with Iraq were not related to the increased attacks.

Critics took aim at President Biden's Middle East policy after three Americans service members were killed in an attack on a base in Jordan near the border with Syria. "Hit Iran now," Sen. Lindsey Graham, R-S.C., said in a statement after the Sunday attack. Graham's comment comes after three U.S. service members were killed and 25 more were injured in a drone attack on northeast Jordan that sits close to the border with Syria, U.S. Central Command (CENTCOM) confirmed. "On Jan. 28, three U.S. service members were killed and 25 injured from a one-way attack UAS that impacted at a base in northeast Jordan, near the Syria border. As a matter of respect for the families and in accordance with DoD policy, the identities of the servicemembers will be withheld until 24 hours after their next of kin have been notified," CENTCOM said in a statement. "Updates will be provided as they become available."

US and coalition troops are also stationed in the Red Sea after the Iran-backed Houthis began attacking commercial ships in the region. The Yemen-based group says it is targeting vessels in the region in support of Palestinians in Gaza, where Israel is fighting Hamas.