The Islamic Republic of Iran has built a coalition of largely Shiite terrorist proxies — the axis of resistance — that is set to join Tehran in counterstrikes in response to the joint U.S.-Israel preventive attacks on Iran’s military installations and leadership.

The most dangerous of Iran’s allies is its main strategic partner, which is Lebanese terrorist organization Hezbollah. Israel’s army had been intensely targeting Hezbollah positions ahead of the U.S. campaign, Operation Epic Fury.

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The Lebanese Armed Forces (LAF) is obligated to disarm Hezbollah, according to the Nov. 2024 ceasefire with Israel. Israel Defense Forces (IDF) spokesperson, Effie Defrin, said on Friday that "In Lebanon, we continue to act daily against attempts by the Hezbollah terrorist organization to rebuild and rearm."

He said, "An example of this is the strike we carried out yesterday in the Baalbek area, during which we targeted ammunition depots and eliminated terrorists from the Radwan Force. We will not allow Hezbollah to rebuild its capabilities and pose a threat to Israeli civilians."

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An official from Hezbollah said on Wednesday that the jihadi terrorist organization will not intervene militarily if the U.S. delivers "limited" strikes Iran. Yet the Hezbollah official said they regard any attack against Iran’s Supreme Leader, Ayatollah Ali Khamenei is a "red line."

According to the Israel-based Alma Research and Education Center (Alma),"Hezbollah fields a substantial combat force, estimated at around 40,000–50,000 active combatants and an additional 30,000–50,000 reservists. Central to its offensive structure is the Radwan Unit, which Hezbollah is making major efforts to rebuild and restore."

IDF Lt. Col. (Res.) Sarit Zehavi, president and founder of Alma in northern Israel, told Fox News Digital, that the "Lebanese army is not putting much effort into disarming Hezbollah. The outcome of that is good intentions are just words. As a resident of the north, I have not seen any systematic disarmament."

Edy Cohen, a Lebanese-born Israeli scholar of Hezbollah, told Fox News Digital the "Lebanese population does not see Hezbollah as resistance" because Hezbollah lost its recent war against Israel. He said Hezbollah failed in its efforts to aid Hamas in Gaza to defeat Israel after its Oct. 7, 2023, invasion of the Jewish state.

The second Iranian-backed proxy is the Shiite militia movement in Iraq. Entifadh Qanbar, a former spokesman for the deputy Prime Minister of Iraq, told Fox News Digital he believes the Shiite militia will join Iran in the war: "Many second-tier Shia leaders, militia lords, as I like to call them, harbor ambitions to rise and challenge the aging top-tier top leadership. They have accumulated enormous wealth, and the only way they can compete with the old guard is by proving to Iran that they are bold, reckless and ready to fight in defense of Tehran."

He added, "Their ambitions have blinded their rational thinking. These are militia terrorists with little understanding of the outside world, yet they are dangerously overconfident. They are loose cannons, completely out of control and Iran is prepared to throw them into the fire because they are expendable. That is why you see Kataeb Hezbollah in Iraq issuing threats, while older, more established militias like Hezbollah Lebanon have made it clear they will not participate."

The pro-Iran Iraqi militia accuses the U.S. of bombing it and pledged a retaliatory response on Saturday. Kataeb Hezbollah said the U.S. is responsible for a strike that targeted an Iraqi military base that houses the Iranian proxy militia. The Iraqi terrorist group says it will "soon start assaulting American bases in response to their attacks."

The third part of the axis of resistance is the Houthi movement in Yemen.

The Iranian-backed Houthis in Yemen have decided to resume missile and drone attacks on shipping routes and on Israel in support of Iran, according to two senior Houthi officials, who spoke on condition of anonymity because there is no official announcement from the Houthi leadership, according to the Associated Press.

One of the officials said the rebels’ first attack could come as soon as "tonight." Palestinian Islamic Jihad (PIJ) in the Gaza Strip is also part of the axis of resistance and Hamas and Iran are also partners in their campaigns to destroy the Jewish state.

THE Associated Press contributed to this report.

Arab nations are sounding off against Iran after the regime launched strikes against U.S. interests in neighboring countries in the region in retaliation for U.S.-Israeli joint strikes against Iran’s leaders.

The Iranian response targeted all U.S. bases in the Gulf, except for U.S. bases in Oman, Fox News’ Jennifer Griffin reported, since the Omani foreign minister had tried to mediate the nuclear talks in Geneva, even flying to Washington, D.C., to meet Vice President JD Vance at the White House on Friday to try to avert what is quickly turning into a regional war.

Griffin reported that approximately 40 missiles had landed in Israel. Meanwhile, the U.S. military in Iraq intercepted at least one missile targeting U.S. facilities. Additionally, Iran appeared to hit the U.S. Navy's Fifth Fleet, but no casualties were reported.

Iran also launched missiles at Saudi Arabia and Jordan, where the U.S. has squadrons of advanced fighter jets, Griffin reported.

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Qatar, Saudi Arabia, Jordan and the United Arab Emirates were among the Gulf states that condemned the Iranian strikes, with many saying they reserve the right to defend themselves and respond accordingly to attacks on their sovereign territories.

Qatar’s Foreign Ministry said it reserves its "full right" to defend itself after what it described as Iranian aggression targeting Qatari territory. Its Defense Ministry said it "successfully thwarted a number of attacks targeting the country’s territory" after multiple rounds of alerts sounded. Authorities reported no immediate injuries or damage in residential areas.

Saudi Arabia’s Foreign Ministry said it affirmed "its full solidarity with and unwavering support for the brotherly countries" and warned of "grave consequences resulting from the continued violation of states' sovereignty and the principles of international law."

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The United Arab Emirates' Ministry of Defense said the country "was subjected to a blatant attack involving Iranian ballistic missiles," adding that air defense systems "successfully intercepted a number of missiles." Authorities said falling debris in a residential area caused "one civilian death of an Asian nationality" and material damage.

The ministry called the attack "a dangerous escalation and a cowardly act that threatens the safety of civilians and undermines stability," and stated the UAE "reserves its full right to respond."

Jordan's foreign minister wrote a series of posts on X, saying that King Abdullah II "condemns the attack on the territories of Jordan, and any attacks on Arab countries," expressing Jordan’s "solidarity with the brotherly Arab countries in confronting any aggressions that affect their sovereignty, security, and stability."

Lebanon’s Ministry of Foreign Affairs said it also "strongly condemns the Iranian attacks," adding that it "affirms its full solidarity with these fellow Arab States and firmly rejects any violation of their sovereignty, any threat to their security, or any action undermining their stability."

Meanwhile, the Omani Foreign Ministry condemned the U.S.-Israeli operation against Iran.

"The Ministry of Foreign Affairs expresses the Sultanate of Oman's profound regret over the military operations launched by Israel and the United States of America against the Islamic Republic of Iran, warning of the danger of the conflict expanding into consequences that cannot be rectified in the region," the Omani Foreign Ministry said in a statement, according to X's translation.

"The Sultanate of Oman considers this action to be in contravention of the rules of international law and the principle of resolving issues through peaceful means rather than hostile means, the shedding of blood, and calls on all parties to immediately suspend military operations, while urging the United Nations Security Council to convene an urgent meeting to impose a ceasefire and for the international community to take a clear stance in support of international law," it added.

Fox News Digital's Efrat Lachter contributed to this report.