Hassan Nasrallah, the secretary-general of Hezbollah, has told his fighters to be on alert for any possible Israeli attack on Lebanon following raids on Gaza that have killed nearly 300 Palestinians.
Nasrallah told a gathering in Beirut's southern suburbs that the Israeli assault on Gaza was a carbon copy of its attacks on Lebanon during a 34-day war with Hezbollah in 2006.
About 1,200 people died in Lebanon and 158 in Israel in that conflict.
"I have asked the brothers in the resistance in the south specifically to be present, on alert and cautious because we are facing a criminal enemy and we don't know the magnitude of the conspiracies," Nasrallah said.
Speaking via video link for security reasons, Nasrallah said Israeli forces had gone on alert along the border with Lebanon since Saturday when the attack on Gaza began.
He said the Israelis were either taking precautionary measures or preparing for an attack in an attempt to avenge its failure to destroy Hezbollah in 2006.