Because of the volatile nature of the place, Israel says it will maintain a presence in Ghajar until a security agreement is reached with the UN and the Lebanese army. Then on October 3, 2006, Israeli jets conducted mock air raids over Nabatiyeh, Khiam, and Marjayoun in Southern Lebanon, and later over the Iqlim al-Tuffah region and Western Bekaa Valley. An Israeli fighter penetrated the defence perimeter of the French frigate Courbet without answer radio calls, triggering a diplomatic incident Israel admitted on October 22 to using white phosphorus in Lebanon. Although Israel continues to deny the use of phosphorus on civilians, doctors in southern Lebanon have suspected some injuries were caused by contact with the chemical. On October 23, Lebanese police reported the "most intensive [Israeli] overflights" of Lebanon after the ceasefire. Two jets flew low over Beirut, while four more aircraft conducted sonic boom raid in Tyre. France, who leads UNIFIL troops, called the continuing overflights "extremely dangerous." Six Israeli F-16's flew over a German vessel patrolling off Israel's coast just south of the Lebanese border on October 24. The German Defence Ministry said that the planes had given off infrared decoys and one of the aircraft had fired two shots into the air, which had not been specifically aimed. The Israeli military said that a German helicopter took off from the vessel without having coordinated this with Israel, and denied vehemently having fired any shots at the vessel and said "as of now" it also had no knowledge of the jets launching flares over it. Israeli Defence Minister Amir Peretz telephoned his German counterpart Franz Josef Jung to clarify that 'Israel has no intention to carry out any aggressive actions' against the German peacekeeping forces in Lebanon, who are there as part of UNIFIL to enforce an arms embargo against Hezbollah. Germany confirmed the consultations, and that both sides were interested in maintaining good cooperation. On October 31, 2006, eight Israeli F-15s flew over many areas of Lebanon, including Beirut. The IAF jets also flew over a French peacekeeper position in Lebanon. According to the French Defense Minister Michele Alliot-Marie, the planes came in at what was interpreted as an attack position, and the peacekeepers were "seconds away" from firing at the jets. After one month, on December 1, 2006, U.N. Secretary-General Kofi Annan submitted a report to the Security Council president maintaining "there were no serious