ISIS strives to create a new Caliphate. It is the fundamental reason for its existence. But the vision does not stop there. As USA Today reports:

An apparent Islamic State recruitment document found in Pakistan’s lawless tribal lands reveals that the extremist group has grand ambitions of building a new terrorist army in Afghanistan and Pakistan, and triggering a war in India to provoke an Armageddon-like “end of the world.”

The document goes into specifics, to include:

… a never-before-seen history of the Islamic State, details chilling future battle plans, urges al-Qaeda to join the group and says the Islamic State's leader should be recognized as the sole ruler of the world’s 1 billion Muslims under a religious empire called a “caliphate.

And it certainly does not sugar coat things. Proclaiming that the world must:

"Accept the fact that this caliphate will survive and prosper until it takes over the entire world and beheads every last person that rebels against Allah. This is the bitter truth, swallow it.”

And warning that:

… “preparations” for an attack in India are underway and predicts that an attack will provoke an apocalyptic confrontation with America: “Even if the U.S tries to attack with all its allies, which undoubtedly it will, the ummah will be united, resulting in the final battle.” 

According to the USA Today article: “Retired Defense Intelligence Agency Director Lt. Gen. Michael Flynn ... reviewed the document” and:

… said it “represents the Islamic State’s campaign plan and is something, as an intelligence officer, I would not only want to capture, but fully exploit. It lays out their intent, their goals and objectives, a red flag to which we must pay attention.”

That would seem like the prudent thing.