Iran and Russia, strengthening their strategic partnership, conducted joint military exercises in the Strait of Hormuz, a critical global oil passage. This follows a recent cooperation pact signed by their presidents amid Western sanctions.

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.

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.

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.

The Islamic Republic appears to be replacing the storied Tomcats with modern Sukhoi Su-35 jets. T he Islamic Republic of Iran Air Force has a motley mix of antiquated U.S. aircraf

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.

Iran acquiring Russian Su-35 fighter jets would mark a major upgrade of its air force without changing the regional balance of power, analysts believe. A senior Iranian military official told state media on Monday that an unspecified number of the Russian aircraft had been purchased, and appeared to warn Israel against an attack.

Russian President Vladimir Putin is hosting his Iranian counterpart President Masoud Pezeshkian for the signing of a broad partnership pact

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

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.