In less than two years, the terror group ISIS has gone from virtually unknown to a household name worldwide.
Its name is an acronym for Islamic State of Iraq and Syria. Though the group been known by plenty of other names, such as ISIL or just Islamic State.
The group has seized control of large regions in those two countries and their main arm stays focused in that area. But now they have operations throughout the Middle East and Northern Africa.
"ISIL is a direct outgrowth of Al-Qaeda in Iraq that grew out of our invasion," said President Barack Obama.
As far as where the group began, experts have traced its origins to Camp Bucca, an American prison in Iraq.
"I think it's undeniable that one of the main causes ISIS’s explosive growth after 2010 was Bucca. It's where they met, it’s where they planned," said Patrick Skinner, a former CIA official.
It’s there that officials believe at least 12 of ISIS's top leaders first met, including its current leader Abu Bakr al Baghdadi.
Their goal is to establish a caliphate, meaning a government under Islamic rule. In June 2014, the group made it their mission to take its caliphate worldwide.
Its ideology is sometimes described as “medieval” but the methods the group uses to spread its ideas certainly aren't “medieval."
ISIS runs a sophisticated social media campaign that includes both footage of work at local hospitals to brutal execution videos.
"One of the two gunmen killed by police in Garland, Texas Sunday had longstanding ties to an alleged jihadi group in Phoenix," a CBS anchor said.
And its recruiting techniques actually might've inspired several “lone wolf” attacks in countries outside its physical reach.
"My name is Abu Muslim. I'm a brother in Islam here in Syria. I originally come from Canada," said Abu Muslim in a propaganda film.
An estimated 3,400 citizens from Western nations have traveled to Iraq and Syria to fight for ISIS. It’s believed the group could have up to 31,000 fighters worldwide.
This video includes images from Getty Images.