In his latest speeches Hezbollah leader Sheikh Hassan Nasrallah has resumed using the term "defense strategy" in reference to future military action by his organization.

"We are always ready to discuss the defense strategy. We are not afraid of discussion," Nasrallah said in his speech in Beirut Wednesday, "... because Lebanon is not out of danger."

What did he mean? "Defense strategy" is in effect the justification for Hezbollah's continued military activity within Lebanon and vis-a-vis Israel.

In the domestic sphere, Nasrallah was indicating Hezbollah's response to its political rivals' demand that it disarm or merge with the Lebanese Army, which the organization is loth to do.

The demand to disarm has been increasing since May, when Hezbollah militants attacked rivals from various sects throughout Lebanon.

Nasrallah claims that Hezbollah's weapons are only part of a broad defense system that Lebanon should set up.

On Wednesday he hinted that members of all sects in Lebanon would be required to contribute to the country's defense from now on. He did not say whether he meant that all Lebanese citizens will have to serve in the army, but he made it clear that Hezbollah would continue to act alongside the army as the Shi'ite defense force.

Israel is following Nasrallah's moves and statements closely.

Nasrallah said that now his organization's mission is to free Lebanese lands still occupied by Israel - the Shaba Farm area, Kfar Shuba (Har Dov) and the northern part of Ghajar village, from which Israelis forces did not withdraw after the Second Lebanon War.

Recent reports in the Lebanese media suggest that completing the prisoner exchange with Israel may bring about a change in Hezbollah's military actions.

The Israel Defense Forces, meanwhile, fears that Hezbollah will now seek ways to act against the IDF in Lebanon.

It could attack Israeli military aircraft, ships or soldiers entering Lebanese space or territory, in violation of the UN resolution that ended the 2006 war.

Nasrallah could also use the "defense strategy" to legitimize Hezbollah activity in Lebanese villages.

In the past two years Hezbollah has been bolstering its underground infrastructures in South Lebanon, despite villagers' fears that they could be hurt in a future confrontation.