How long has Isis been around?

Answer 1

Islamic State is the successor organization to al-Qaeda Iraq when that organization split off from al-Qaeda and decided to create a paramilitary state in northeastern Syria in 2013 and then allied with the former Baathists in Iraq to conquer a large swath of the Iraqi northwest in 2014. Al-Qaeda Iraq was founded in 1999 and became infamous for terrorist attacks in Iraq in 2003.

Answer 2

The Islamic State of Iraq and Syria (ISIS) emerged in 2013, evolving from the group previously known as al-Qaeda in Iraq. It gained significant territorial control in Iraq and Syria between 2014 and 2017 before facing military defeats. The organization continues to pose a threat through its global network and ongoing insurgency activities.