Islamic State (IS) remains defeated in its core strongholds of the Middle East but has made significant progress in Africa and parts of south Asia, winning territory and resources that could serve as a launchpad for a new campaign of extremist violence, analysts and officials believe.
European governments have moved to their highest levels of alert for years after the attack on a concert hall in Moscow last month by militants from IS that killed at least 140 people.
Within 48 hours, France increased its surveillance and risk warning to the highest level and Italy too ordered enhanced measures. In Germany, officials described an “acute risk”.
The attack in Moscow
