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.

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.

Tehran confirmed the purchase of Moscow's Sukhoi Su-35 fighter jets, strengthening the countries' military and political ties.

Russia and Iran signed a mutual defense and security cooperation pact on Jan. 17 — just days before President Trump’s inauguration. Both nations are primary opponents of the U.S., demonstrated by Russia’s war against Ukraine and Iran’s attempts to assassinate Trump,

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.

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.

For Moscow, Iranian President Masoud Pezeshkian's visit to Russia on Jan. 17 is a diplomatic victory. The trip's centerpiece will be the finalization of a long-heralded partnership deal between Russia and Iran,

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.

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

Today’s Trump is one of the most battle-tested leaders on the world stage, and he’s bringing that experience to bear on changing world circumstances.

By threatening Colombia with the type of sanctions reserved for U.S. adversaries, Trump inflamed global interest in cultivating alternatives to the dollar.