Nicole Grajewski is a Fellow in the Nuclear Policy Program at the Carnegie Endowment for International Peace and an Associate with the Project on Managing the Atom at the Harvard Kennedy School. She is the author of Russia and Iran: Partners in Defiance From Syria to Ukraine.

For the first time, an Iranian official has confirmed Western suspicions that Tehran has purchased the Russian-designed Sukhoi Su-35 fighter jet. Ali Shadmani, the deputy coordinator of the Khatam-ol-Anbia Central Headquarters and a senior official within the IRGC,

Iran has purchased Russian-made Sukhoi-35 fighter jets, a senior Revolutionary Guards commander said on Monday, amid Western concerns about Tehran and Moscow's growing military cooperation.

Just three days before US President-elect Donald Trump returns to the White House, Russia and Iran have finally signed a “comprehensive partnership agreement,” a deal that had been in the works for months.

The presidents of Russia and Iran have held talks in the Kremlin before the signing of a broad cooperation pact to deepen their partnership amid stinging Western sanctions.

Russian President Vladimir Putin and his Iranian counterpart Masoud Pezeshkian deepened military ties between their countries on Friday by signing a 20-year strategic partnership that is likely to worry the West.

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 tech to Iran, which faced isolation from sweeping international sanctions. Russia built Iran’s first nuclear power ...

The agreement is focused more on trade than military issues, but it will bring two countries with a shared desire to challenge the West closer together.

Russia and Iran plan to sign a new 20-year treaty, and it is missing a key element in its territorial integrity clause: Crimea.

Russian President Vladimir Putin and Iranian President Masoud Pezeshkian will meet in Moscow to sign a partnership pact as the two nations brace for President-elect Trump's return.

While Moscow and Tehran have shared warmer relations for decades, a revival of the nations’ allyship occurred when the former invaded Kyiv.

Putin and Iran's President Deepen Defence Ties With 20-Year Pact By Vladimir Soldatkin and Andrew Osborn MOSCOW (Reuters) -Russian President Vladimir Putin and his Iranian counterpart Masoud ...