Russia might deliver a long-overdue S-300 air defense missile system to Iran, honoring a contract that was canceled in 2010 following strong pressure from the West, Iranian and Russian media said on Tuesday.

Russian Defense Minister Sergei Shoigu is visiting Tehran and signed an agreement with Iranian Defense Minister Brigadier General Hossein Dehqan to boost cooperation, Iran’s Fars semi-official news agency said.

Fars said the two countries would resolve problems with the delivery of the advanced missile system, while Russia’s RIA state news confirmed the issue was once again under discussion. […]