The names of the Muslim leaders, and the names of their Islamic groups, are transitory and ultimately unimportant. Osama Bin Laden and Al Qaeda are succeeded by Al-Baghdadi and the Islamic State, but they will all pass from the scene and be replaced by others. While Muslim leaders and regimes have come and gone, Islam itself has remained steadfastly at war with the non-Muslim world for 1,400 years.
Islam does not recognize secular national boundaries. To devout Muslims, there are only two significant realms of the world. First is the Dar al-Islam — the House of Islam, which is the land of the believers. The other is the Dar al-Harb — the House of War, which must be made Islamic by any means, including violent jihad.