A Chinese warship sails during the joint navy exercise of Iran, China, and Russia in the Gulf of Oman, Iran, March 12, 2025. Photo: Iranian Army/WANA (West Asia News Agency)/Handout via REUTERS

Expanding military cooperation between Iran, China, and Russia presents a rising threat to the US and its allies in the Middle East, especially Israel, according to experts who spoke with The Algemeiner.

The warning came as Iran, China, and Russia on Wednesday concluded three days of joint naval drills in Iranian territorial waters in the Gulf of Oman, located in the northern Indian Ocean, bolstering defense cooperation as tensions in the Middle East mount over Tehran’s expanding nuclear program and terrorist proxies across the region.

The joint drills — called the Maritime Security Belt 2025 — also took place near the strategic Strait of Hormuz off southeast Iran, a critical passageway for global energy supplies through which a fifth of all crude oil traded worldwide passes. Iran has previously threatened to close the waterway if conflict breaks out with the US and Israel.

According to Jack Burnham, a research analyst at the Foundation for Defense of Democracies (FDD), a Washington, DC-based think tank, such joint drills will allow the three authoritarian regimes to become more interoperable with each other while gaining valuable experience operating in a strategically sensitive environment.

This week’s joint naval exercise was the fifth conducted by Iranian, Chinese, and Russian military forces since 2019.

“The most recent iteration of these naval drills between Iran, China, and Russia highlights these capitals’ growing ties during a period of international turmoil,” Burnham told The Algemeiner. “In recent months, Russia and Iran have cemented closer defense ties, China has allegedly shipped missile components to Iran and its proxies, and China and Russia celebrated the anniversary of the Ukraine war by reaffirming their ‘no limits’ partnership.”

He also explained that such cooperation will allow the Iranian, Chinese, and Russian militaries to feel more comfortable operating together if a regional crisis emerges, adding that joint exercises may eventually lead to other forms of defense cooperation, “such as transferring cutting-edge military technologies between authoritarian states bent on challenging the West.”

“For Israel and for the region, the possibility of Iran and its proxies strengthening their already-comprehensive arsenals via access to Chinese and Russian weapons components presents a clear danger to its security,” Burnham said.

According to Iranian state media, this week’s joint drills featured warships and combat and support vessels from the Chinese and Russian navies, as well as warships from Iran’s naval forces, including both the regular military and the Islamic Revolutionary Guard Corps, an internationally designated terrorist organization.

The Iranian Navy’s deputy head of operations, Rear Admiral Mostafa Tajeddini, said these exercises aimed to “strengthen security in the region and expand multilateral cooperation between participating countries,” with the main goal of enhancing maritime security in the northern Indian Ocean, the Iranian state news agency IRNA reported.

The naval drills were monitored by observers from Azerbaijan, South Africa, Oman, Kazakhstan, Pakistan, Qatar, Iraq, the United Arab Emirates, and Sri Lanka who traveled to Tehran.

In a statement, the Chinese Defense Ministry said the drills aimed at “enhancing military trust and strengthening practical cooperation,” including simulated strikes on maritime targets, visit-board-search-seizure operations, and search and rescue missions.

Both China and Russia have had deep interests in Iran as a partner in the Middle East. Beijing has continued to purchase Iranian crude oil despite Western sanctions and remains one of the top markets for Iranian imports. Meanwhile, Russia has relied on Iran for the supply of bomb-carrying drones used in its war on Ukraine.

According to John Lee, a senior fellow at the Hudson Institute, a Washington, DC-based think tank, cooperation between China, Russia, and Iran has evolved from primarily political, diplomatic, and economic coordination to increasingly include military elements over the past half decade.

“Such exercises indicate that these three countries are preparing to work together across multiple potential conflict zones from the Middle East and Persian Gulf to Eastern Europe to Northeast Asia,” Lee told The Algemeiner.

“That they are practicing tactical strikes against sea-based targets as well as search and seizure operations is a simulation of what would be needed during a hot war with the US and its allies,” he continued.

Lee also explained that these three countries are united by their goal of undermining American power, with Iran trying to weaken Israel and disrupt stability in the Persian Gulf, Russia aiming to challenge NATO and expand into Eastern Europe, and China focused on integrating Taiwan and controlling the South China Sea.

With Iran seeking to coerce and gain leverage by disrupting shipping in the Persian Gulf, Lee argued that US hard power and influence are the key factors preventing these objectives from being realized.

“In a war scenario, the Persian Gulf and other choke points such as the Gulf of Aden become of immense strategic and tactical importance,” Lee said. “Deeper cooperation with Russia and China could allow Iran to exert its presence and influence in these bodies of water.”

Iran’s growing ties with China and Russia come at a time when Tehran is facing increasing sanctions by the United States, particularly on its oil industry, as part of the Trump administration’s “maximum pressure” campaign aimed at cutting the country’s crude exports to zero and preventing it from obtaining a nuclear weapon.

Even though Tehran has denied wanting to develop a nuclear weapon, the UN nuclear watchdog – the International Atomic Energy Agency (IAEA) – has warned that Iran is “dramatically” accelerating uranium enrichment to up to 60 percent purity, close to the roughly 90 percent weapons-grade level.

On Wednesday, the UN Security Council met behind closed doors to discuss Tehran’s nuclear program and its obligation to provide the IAEA with “the information necessary to clarify outstanding issues related to undeclared nuclear material detected at multiple locations in Iran,” diplomat told Reuters.

Tehran has repeatedly claimed that its nuclear program is for civilian purposes rather than weapon development.

However, Western states have said there is no “credible civilian justification” for the country’s recent nuclear activity, arguing it “gives Iran the capability to rapidly produce sufficient fissile material for multiple nuclear weapons.”

Last week, Iran’s so-called “supreme leader,” Ayatollah Ali Khamenei, said Tehran will not be bullied into negotiations after US President Donald Trump revealed he had sent a letter to the country’s top authority to negotiate a nuclear deal.

Last month, Iranian Foreign Minister Abbas Araghchi rejected the possibility of nuclear talks with Washington.

“There will be no possibility of direct talks between us and the United States on the nuclear issue as long as the maximum pressure is applied in this way,” Araghchi said during a joint press conference with his visiting Russian counterpart, Sergei Lavrov.

China will hold a meeting on Friday in Beijing with Russia and Iran on the Iranian “nuclear issue”, its foreign ministry said at a press conference, further highlighting the growing cooperation between the three powers.