What is 'Iron Dome', Israel's missile defence system that intercepts rockets?

Israel's 'Iron Dome' missile defence system is intercepting barrages of hundreds of rockets fired by Gaza's Hamas rulers and other militant groups. The Rafael and Israeli-designed system relies on a radar system to analyse the incoming rocket and intercepts and destroys short-range rockets and artillery shells. It is highly mobile and is also effective against aircraft, helicopters and UAVs.