Russia and Iran Have a Troubled History Despite their Current Alliance

FILE - In this photo released by the Tasnim News Agency, the Iranian Revolutionary Guard troops travel in a plane from Rasht in northern Iran, to Kermanshah in western Iran, during a drill on Jan. 5, 2025. (Hossein Zohrevand/Tasnim News Agency via AP, File)

Russian President Vladimir Putin is hosting his Iranian counterpart Friday for the signing of a broad pact between Moscow and Tehran.
The Kremlin says the “comprehensive strategic partnership” agreement between Putin and Iranian President Masoud Pezeshkian will take their cooperation to a new level.
The signing comes ahead of the Jan. 20 inauguration of President-elect Donald Trump, who has pledged to broker peace in Ukraine and take a tougher stance on Iran.
What to know about the Russian-Iranian relationship:
Historic Rivals Become Allies
Russia and Iran fought wars in the 18th and 19th centuries, with the Russian Empire capturing broad territories in the Caucasus and the Caspian region previously controlled by Persian rulers. In the early 20th century, Russian troops occupied large parts of northern Iran, but the 1917 Bolshevik Revolution ended their presence. In World War II, the Soviet Union and Britain invaded Iran, which still evokes painful memories in Tehran.
Tensions ran high in the Cold War, when Tehran was a US ally under the Shah of Iran. After his ouster in the 1979 Islamic Revolution, leader Khomeini castigated the US as the “Great Satan,” and denounced the USSR as the “Lesser Satan.”
Russia-Iran ties warmed after the USSR's demise in 1991. Moscow became an important trade partner and a key supplier of weapons and high technologies to Iran, which faced isolation from sweeping international sanctions.
Russia built Iran’s first nuclear power plant in the port of Bushehr that became operational in 2013. The next year, Moscow signed a contract to build two more nuclear reactors.
Russia was part of the 2015 deal between Iran and six nuclear powers offering sanctions relief for Tehran in exchange for curbing its atomic program and opening it to broader international scrutiny. Moscow offered political support to Iran when the US unilaterally withdrew from the agreement during Trump’s first term.
Allies In Syrian Civil War In Bolstering Assad
After a civil war in Syria erupted in 2011, Russia and Iran pooled efforts to shore up Bashar Assad's government against the Türkiye-backed opposition seeking his ouster. In 2015, Russia launched a military campaign in Syria, joining Iran and its proxies, that helped Assad re-establish control in most of the country.
With Moscow preoccupied with fighting in Ukraine, and Iran facing challenges from Israel, they failed to prevent a swift collapse of Assad’s rule last month after a lightning opposition offensive.
How Russia And Iran Cooperate
The West alleges that in 2022, Russia and Iran signed a $1.7 billion deal for Shahed drones after Putin sent troops into Ukraine, and the US also believes Iran has transferred short-range ballistic missiles, but neither Moscow nor Tehran ever acknowledged the actions.
Iranian leaders give strong political support to Putin, echoing his arguments for justifying the conflict.
Tehran likely hopes to secure financial and defense promises from Moscow for its tattered economy after the collapse of the 2015 nuclear deal and amid increasing pressure in the Middle East.
Assad’s downfall was a major blow to Tehran's self-described “Axis of Resistance” in the region after Israel’s punishing offensives against two militant groups backed by Iran -– Hamas in Gaza and Hezbollah in Lebanon. Israel attacked Iran directly twice, and Israeli officials claimed the raids took out Tehran's Russia-supplied S-300 air defense systems.
Iran wants Russian long-range air defense systems and other weapons. It has hoped to get Russia's advanced Su-35 fighter jets to upgrade its aging fleet hobbled by sanctions, but Moscow only provided a few Yak-130 trainer jets in 2023.
Trump's policy of “maximum pressure” on Iran heralds more trouble for Tehran. This month, he left open the possibility of the US preemptive airstrikes on Iranian nuclear sites. Iran insists its nuclear program is peaceful, but some officials increasingly suggest it could pursue atomic weapons.
Deepening ties between Moscow and Tehran Kremlin spokesman Dmitry Peskov said the “comprehensive strategic partnership” treaty covers all areas -– from trade and military cooperation to science, education and culture. He dismissed any link with Trump’s inauguration, saying the signing was planned long ago.
Iranian Foreign Minister Abbas Araghchi described it as a “fully comprehensive treaty that takes into account all dimensions of the relationship, with a particularly strong economic aspect.”
He told state TV that while it covers defense and security cooperation, “this is a complete and comprehensive treaty, not one focused on a specific purpose, such as a military alliance.”
Healing Rifts, Lifting Suspicions
Despite the official rhetoric, the nations' troubled history makes many Iranians suspicious about Russia. Kremlin efforts to balance courting Tehran while staying friendly with Israel adds to the uneasiness.
There are signs of growing discontent about Russia within Iran’s powerful Revolutionary Guard, a paramilitary force answerable only to Supreme Leader Ali Khamenei. Last week, an audio recording leaked in Iranian media with a Guard general blaming Russia for woes Iran suffered in Syria.