(Reuters) - A Hezbollah leader appealed for calm on Wednesday and an easing of sectarian tensions in Lebanon, a day after twin suicide bombings struck the Iranian embassy in Beirut.

"The solution to this confrontation begins politically," the Shi'ite Muslim group's deputy leader, Sheikh Naim Qassem, said on Lebanese radio, calling for unity.

"Then there are security and military steps by the (Lebanese) authorities ... in addition to attempts to calm the arena and reduce the transmission of sectarian poisons."