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Abu Dhabi(CNN) As Russia faces growing setbacks in Ukraine, it appears to be increasingly turning to Iran for help, in a development that has sparked concern from the West and Tehran's regional adversaries.
Sources familiar with US intelligence have told CNN that Iran has sent military trainers to Crimea to train and advise the Russian military on the use of Iranian-built drones that Moscow has used to rain down terror on cities across Ukraine.
The presence of Iranian personnel in occupied Ukrainian territory would mark a significant escalation in Iran's involvement in the war in support of Russia, and a new phase in the two countries' budding military alliance.
Reuters on Tuesday also reported that Iran may supply Russia with surface-to-surface missiles. Nasser Kanani, the spokesperson for Iran's Ministry of Foreign Affairs, denied the allegation, saying Iran "has always opposed the continuation of the [Ukraine] war."
Despite their differences, Iran and Russia have been getting closer because they "share the same threat perception," said Behnam Ben Taleblu, a senior fellow at the Foundation for Defense of Democracies, a hawkish think tank in Washington. "They see a regional order aligned against them by an extra-regional power," he said, referring to the United States.
If Iran sells missiles to Russia, this would mean that it is "moving some of its most accurate, some of its most precise ammunition closer to Europe," he said. "It is critical to see Iranian involvement with Russia as part of its larger war with the West."
Since Russia's invasion, the two sanctioned countries have cooperated on political and economic matters, with the military dimension being the latest facet in their relationship.
Major General Yahya Safavi, a top military aide to Iran's supreme leader, on Tuesday boasted that 22 countries are now in the market for Iranian drones.
Iran, which before the 1979 revolution imported most of its weapons, now manufactures more than 80% of its military equipment, he was cited as saying by semi-official news agency Fars.
Iran and Russia have repeatedly denied the Islamic Republic's involvement in Ukraine, but analysts have said that the news around Iranian drones isn't necessarily seen as bad publicity in Tehran.
While Russia's use of Iranian weapons may say more about its desperation in the war than Tehran's military prowess, experts say that media reports about Iran's killer drones are bolstering its image as it tries to show the world that its arms can compete in international conflict.
"For the Iranians, it is about getting market share, it is about prestige, it is about solidifying alliances," said Eric Lob, a non-resident scholar at the Middle East Institute's Iran program, adding that these are incentives for a country that is as isolated as Iran.
Iran hasn't been known as a weapons exporter. Its arms were previously sent to ideologically aligned proxies in Iraq, Yemen and Lebanon, largely to fulfill the Islamic Republic's own regional agenda. The Ukraine war, say analysts, is changing that.
Drones have been in use in the Middle East for several years, but, Lob said, "the Iranians have been working on their indigenous drone capabilities since the Iran-Iraq war, since the 1980s," giving Tehran ample time for further advancement.
The Ukraine war is an opportunity for Iran to observe how its drones are being used in the battlefield, so it can look at the shortcomings and see how to further improve them, said Aniseh Bassiri Tabrizi, a senior research fellow at the Royal United Services Institute (RUSI) in London. She added that "it is possible that what is happening in Ukraine would bring Iran more customers... Iran really wants to be a big player in the arms and drones industry."
But Iran's foes will also be watching the performance of its drones in Ukraine. Its regional rivals in the Gulf Arab states have been direct targets of drone attacks by the Iran-aligned Houthi group in Yemen, and they have accused the Islamic Republic of supplying those drones.
Iran's archenemy Israel, too, is likely to be watching very closely, said Amir Avivi, a retired senior general in the Israel Defense Forces (IDF) and founder and CEO of the Israel Defense and Security Forum.
"It's a threat and it's an opportunity," he told CNN. "It's an opportunity for us to really see [Iranian] capabilities on the grounds, learn about what's going on. On the other hand, one of the things that worries us is that [weapons]... might arrive to Hezbollah, for example, [or] to Hamas."
"It's a challenge all the time to keep developing and always being one step ahead [of] the capabilities that the other side is developing," he said. "So we are watching very closely what is happening in Ukraine."
Tehran and Moscow's growing military ties are, however, "bad news" for the West, he said, "because [we've] never seen such a tight and close cooperation between Russia and Iran."
CNN's Hadas Gold and Abbas Al Lawati contributed to this report.
Regime change instigated from Washington is not part of the Biden administration's policy on Iran, US Special Envoy for Iran Robert Malley told CNN's Becky Anderson on Monday.
"Our policy is to defend and support the fundamental rights of Iranian citizens just as we want to support the fundamental rights of citizens across the globe. The form of government in Iran will be up to the Iranians to decide," he said.
Nationwide protests have been ongoing for over a month following the death of 22-year-old Mahsa Amini with calls for regime change ringing around the streets.
Here's the latest on this developing story:
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The son of an American citizen imprisoned in Saudi Arabia for criticizing the Saudi government said Tuesday evening that his father is "nowhere near being a dissident." Ibrahim Almadi told CNN on Tuesday that if his father had been held in Russia or Iran, "we'd see his name in the headlines every morning."
Egypt, Kuwait, UAE: #Ahmed_Al_Saadoun
It's not every day that a politician from a small Gulf country trends on social media half the way across the Arab world. But Kuwait's new parliament speaker is a popular figure who has a following far beyond his country's borders.
Eighty-seven-year-old Ahmed Al-Saadoun was named speaker of Kuwait's parliament on Tuesday. He's not new to politics, having served as speaker between 1985 and 1999, as well as in 2012. A fiery politician whose career has spanned almost four decades, he is a staunch advocate of democracy, human rights and freedom of expression and is known for his vocal support for the rights of Palestinians.
Sadoun, who has more than 400,000 followers on Twitter, was trending in Egypt, Kuwait and the UAE following the announcement. Kuwait is a country of 4.3 million people, just under 2 million of whom are citizens.
The new speaker has not shied away from controversy. In Gulf states, publicly criticizing neighboring countries is taboo but in 2012, after Saudi Arabia proposed joining Gulf nations into a union, Saadoun, as the-then speaker of parliament, said he supported Gulf integration with conditions.
"There cannot be a union with countries whose political systems are different... whose jails are filled with thousands of prisoners of conscience," he told the Saudi state-backed news channel Al Arabiya news channel at the time, adding that his own country enjoys freedom of expression and representation.
Kuwaiti politics are followed closely in the region. Despite the years-long standoff between the government and parliament, which has delayed crucial reform, the country is widely viewed as the most democratic of the six Gulf states, with a vibrant press scene and a relatively open political discourse.