As 2020 begins, the world is firmly in the post-Islamic State "caliphate" phase of the jihadist struggle. In 2019, the Islamic State lost the last sliver of the vast territory it had seized during its rapid rise in 2014. The group also lost its "caliph," Abu Bakr al-Baghdadi, in a U.S.-led raid in October 2019. The conditions that fueled its growth and propelled it to the forefront of the jihadist movement have clearly changed. But the threat hasn't disappeared.
The movement continues to be split generally between the Islamic State and al Qaeda. However, in practice, the jihadist ecosystem is really far more complex. ...