Leader of Lebanon's Shiite group Hezbollah described the Saudi-led airstrikes against the Iranian-backed Houthi militias in Yemen as an "aggression."
In a televised speech, Hassan Nasrallah called for "rational dialogue", as well as the "immediate cessation" of the military operation that started after Houthi fighters stormed the southern coastal city of Aden.
"There is no proof that the situation in Yemen is threatening the security of Saudi Arabia and the Gulf region," Al-Mayadeen TV quoted Nasrallah as saying.
"If the operation was launched against Israel, we would have taken part in it."
Nasrallah's statements come just one day ahead of a two-day Arab League summit that will be held in Egypt's Red Sea resort of Sharm El-Sheikh.