Despite truce, Israel has damaged or destroyed hundreds of buildings in Lebanon

The U.S.-backed ceasefire, which expires this month , halted an all-out war that broke out in September .

The agreement calls for both Israel and Hezbollah , a once-powerful political and military force, to withdraw from the border region by Jan. 26 .

It's unclear whether these military actions constitute violations of the deal.

In first five days of the truce, Israel fired at least 99 projectiles into Lebanon and Hezbollah fired two projectiles into Israel .

Hezbollah has not fired into Israel since then and has said very little about the ongoing military activity.

Israeli officials say Hezbollah is violating the agreement by keeping fighters in southern Lebanon .

The international committee responsible for monitoring the ceasefire has only met three times, two diplomats say.

By Dec. 27 , Israeli troops had advanced farther into Lebanon than they were during the war in at least 31 areas in the south.

Hezbollah has retained 20 to 30 percent of its weaponry, according to retired Col. Miri Eisin.

In response, the IDF is returning to places where it operated earlier in the conflict and venturing into new areas.