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 and Iranian officials say the “comprehensive strategic partnership treaty” covers all areas -– from trade and military cooperation to science, education and culture. The 20-year treaty could be extended further.

The two countries sign a 20-year treaty covering areas ranging from defence and technology to energy and trade.