Complex sentence: The "Arab Regional Jamboree" was to be held in Lebanon in August 2006, however without a stable and peaceful environment, the leaders of the Arab Region decided to defer the date of the event to be in Beirut during 2007.
Split into simpler sentences: The "Arab Regional Jamboree" was planned to be held in Lebanon in August 2006. However, without a stable and peaceful environment, the leaders of the Arab scout region decided to defer the date of the event to be in Beirut during 2007.