The S-300 anti-aircraft missile system at the Victory Parade, Red Square, 2009. Photo: Wikipedia.

Russia has lifted a ban on supplying Iran with a sophisticated air defense missile system, the Kremlin has said. Delivery of the S-300s was cancelled in 2010 after the UN imposed sanctions on Iran over its nuclear programme.

But the Russian president gave the go-ahead after Tehran struck an interim deal with world powers to curb nuclear activities in exchange for sanctions relief.

Read full story at the BBC.