Shooting down a Russian airliner over the Sinai desert; the Beirut bombing; and now the Paris attacks, seem to belie Obama's idea that the Daesh's caliphate ambitions are restricted to the region and the civil war there is fertile grounds for this JV (Juvenile Varisty is the term Obama once used, unfortunately, to describe Daesh/ISIL/ISIS/Islamic Terrorists/Jihadis/WhateverYouWanToCallThem).
US Intelligence and Homeland Security have been focused on the lone-wolf attack, but also on the global reach of both Al Qaeda and now Daesh.
We must still follow the strategy of no US ground troops and instead help[ the Arabs help themselves, like we're doing with the Kurds. We must be forceful to get the Russians and Iranians from focusing on Daesh areas too, while we work out a political solution to Assad's rule and then turn the heat up once and for all on Daesh. It wll take some time and diplomatic offensive to achieve the stability of Syria politically to then eradicate Daesh. The Iraqi front is more solid politically with the new Iraqi Shiite government being inclusive of Sunnis in the regions that Deash captured last year.
Settle Iraq and Syria and then get the Saudis the hell out of Yemen, while strengthening Libya and parts of North Africa (Al Shabab and Boko Haram), and in 5 years we can have some semblance of pre-9/11 tranquility in that region. Netanyahu must go and his "Jewish State" demands removed before the last piece of Palestinian/Israeli peace can be put in place.