The head of Lebanon’s Iran-backed Shia group Hezbollah said his movement would not immediately retaliate if Tehran was ever attacked by Israel. Hassan Nasrallah, speaking to Iranian state Al-Alam TV, said he believes Israel will not strike Iran despite mounting tensions over Tehran’s nuclear programme. Hezbollah, a Lebanese political and militant movement, is one of Iran’s closest allies in the region and has received substantial support from Tehran during its nearly four-decade existence. The group has been attacked by critics for its “disruptive” role in Lebanese politics, as the country goe…