The above video gives a good overview of how the sands of the Middle East have changed since the death of the Prophet Mohammed in 632 AD. Conquering powers come and go as can be seen (This happens in other places in the world as well of course). Is ISIS the latest conqueror? It now controls Eastern Syria and Western Iraq and has been engaged in a fierce battle in the Syrian Kurdish border town of Kobane. Kobane is just two miles from the Turkish border where the Turks have hesitated to intervene. The Turks may not care for ISIS but they are also concerned about troubles with their own Kurdish population.
The interests of all these groups, Sunnis, Shiites, Kurds, Turks, Arabs, Iranians, Israelis, Yazidis, and others are complex and cannot be resolved with bombs. Outside military intervention by the US and other countries only makes matters worse.
ISIS would not exist without the 2003 US invasion of Iraq. al Qaeda's roots go back to the 1979 Soviet invasion of Afghanistan. The Islamic Republic of Iran's roots date back to the CIA overthrow of the democratically elected government there in the 1950's and the subsequent support of the Shah who brutally suppressed his people. The people of the Middle East have been better off when they were free of outside intervention.
A Fox News poll has come out saying that a majority of the US Public now favors sending US troops into fight ISIS. Polls can be used as propaganda tools as well as to inform the public. A CBS/NYT Poll from Sept. 19 shows that a 62% of Republicans support sending ground troops into Iraq where 39% of the total population do (Kevin Drum from Mother Jones added the expletive). Are Republicans itching for a new war in the Middle East, at least if Jeb Bush is elected in 2016?