The two countries signed 20-year cooperation pact, but despite anti-US stance there are limits to their partnership.

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.

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 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.

What to know about the Russian-Iranian relationship:

Russia and Iran sign a 20-year strategic partnership agreement to bolster military, political, and economic cooperation amid Western sanctions and escalating tensions.

Russian President Vladimir Putin and Iranian President Masoud Pezeshkian signed a broad cooperation agreement, deepening their already growing partnership.

Iranian President Masoud Pezeshkian told his Russian counterpart Vladimir Putin he believed their two countries could finalise agreements on the construction of a nuclear power plant in Iran as the tw

With an Israel-Hamas cease-fire set to begin, the shock waves from their war have reshaped the region in unexpected ways.

Iranian President Masoud Pezeshkian and Russian President Vladimir Putin are set to sign a comprehensive strategic partnership treaty. However, the pact drew eyeballs with one of its clauses. According to the Middle East Eye,

Russian and Iranian officials say the "comprehensive strategic partnership treaty" covers all areas -— from trade and military cooperation to science, education and culture.