I predict from the News sources info on ISIL/ISIS, we'll definitely have to do air strikes at minimum and probably ground forces. They're gathering too much momentum, causing too much of a conflagration in the ME/Levant and rumoring they'll start terror attacks on the US and Israel. All that and their increasing ability to affect oil markets and drawing in other surrounding Arab nations will put pressure on the US to react.
They might settle down and organize the areas they have in control and leave it alone, but I doubt it because of their fundamentalist nature to spread extremism and conquer.
BAGHDAD — Winding up a day of crisis talks with Iraqi leaders, Secretary of State John Kerry said on Monday that the Sunni militants seizing territory in Iraq had become such a threat that the United States might not wait for Iraqi politicians to form a new government before taking military action.
“They do pose a threat,” Mr. Kerry said, referring to the fighters from the Islamic State in Iraq and Syria. “They cannot be given safe haven anywhere.”
http://www.nytimes.com/2014/06/24/wo...ment.html?_r=0President Obama said that the jihadist group known as the Islamic State of Iraq and Syria "poses a medium- and long-term threat" to the American people, but that other organizations present more imminent danger.
"Right now the problem with ISIS is the fact that they're destabilizing the country," Obama said. "That could spill over into some of our, you know, allies like Jordan and that they are engaged in wars in Syria where — in that vacuum that's been created — they could amass more arms, more resources."
Obama says ISIS ‘poses a medium- and long-term threat’ to Americans - The Washington Post