The Lebanese Hezbollah is conducting fierce attacks against Israeli targets to help Hamas in Gaza, the group’s leader Hassan Nasrallah said in a speech on Friday.

Following the targeted killing of Saleh al-Arouri, a top Hamas leader by Israel in Beirut’s Hezbollah-controlled southern suburbs, Nasrallah tried to convey a sense of strength and commitment to aiding Hamas.

“If we had not opened the northern front, forcing Israel to draw away brigades from Gaza, it could have more easily replaced and rotated their forces in Gaza…and the fighting there would have been much more difficult for the resistance,” Nasrallah who has lived in hiding for years said in a video address.

Following Hamas’ October 7 attack on Israel, many expected a full-fledged war to erupt also against Hezbollah, but the Iranian-backed force has limited its involvement to border skirmishes with Israel. Nasrallah claimed that Hezbollah has killed and wounded thousands of troops, that he said Israel keeps as a secret.

He also warned Israelis not to attack Lebanon. “I say to the settlers who call on Israel to launch a war on Hezbollah; this would be a wrong decision for you, and you would be the first one to be affected.”

Hezbollah’s patron, the Iranian regime, has also avoided direct involvement in the Gaza war, despite its decades-long rhetoric to destroy Israel.

Some observers have argued that Iran is not willing to risk Hezbollah, which is its strongest proxy force in the region. Tehran also does not have the financial resources to compensate losses, like it did after the 2006 Israel-Hezbollah war, when it had much higher oil revenues.