incidents or confrontations" since the cease-fire in August 2006. He did, however, note that peacekeepers reported air violations by Israel "almost on a daily basis", which Israel maintained were a security measure related to continuing Syrian and Iranian arms shipments to Hezbollah, and evidence of the presence of unauthorized armed personnel, assets, and weapons in Lebanon. In one case, a UNIFIL demining team was challenged by two Hezbollah members in combat uniforms armed with AK-47 rifles. UNIFIL notified the Lebanese army, who arrested three suspects the next day. There were also "13 instances where UNIFIL came across unauthorized arms or related material in its area of operation", including the discovery of 17 katyusha rockets and several improvised explosive devices in Rachaiya El-Foukhar, and the discovery of a weapons cache containing seven missiles, three rocket launchers, and a substantial amount of ammunition in the area of Bourhoz. Annan also reported that as of November 20, 2006, 822 cluster bomb strike sites had been recorded, with 60,000 cluster bomblets having been cleared by the UN Mine Action Coordination Center. Then on January 17, 2007, Israeli IDF Chief of General Staff Dan Halutz resigned. The resignation came shortly after work on a governmental investigation on the conflict was announced complete. On February 1, 2007, Prime Minister Ehud Olmert told the Winograd Commission, formed to inquire into the Israeli-Lebanese war, that the attack was planned four months in advance based upon an earlier target list drawn up by former Prime Minister Ariel Sharon. Based on prior Hezbollah abduction of IDF soldiers in the North of Israel, Olmert ordered the IDF to put an end to it. In April 2007, Olmert vowed not to resign despite findings from a comprehensive report which noted his "severe failure" in handling the war. On June 17, 2007, an unknown militant group fired two rockets from Lebanon into northern Israel, an action which the UN condemned as a serious violation of the ceasefire. Hezbollah denied involvement in the incident, and Israel emphasized that it would restrain itself from responding by force. Saniora pledged that "The state [...] will spare no effort in uncovering those who stand behind this incident." Israeli jets entered Syrian airspace on September 6, 2007, claiming to search for Syrian weapons shipments to Hezbollah. Iran and North Korea condemned the Israeli action, but the incident provoked little international response otherwise. See also Military operations of the