They have predicted this will affect the entire continent, eventually leading to civil war on the streets.
In December 2015, one of the most apocalyptic warnings came from André Blattmann, the Swiss head of the armed forces.
Blattmann, who left his job just weeks later, said the combination of hybrid wars, the economy, and the refugee crisis would have “unforeseen dimensions”.
He then claimed social unrest was something Europe’s leaders and armies had to be prepared for.
Blattmann was writing in a newspaper just days after France had been rocked by one of the worst terror attacks in the country’s history.
On November 13, 2015, Islamist gunmen went on a shooting rampage at various locations in the capital of Paris, massacring 130 people.
It sparked a wave of ISIS-linked terror attacks in Europe’s major cities, including Berlin, Munich, and Nice.
One of the most high profile was the Nice lorry horror, where Islamist fanatic Mohamed Lahouaiej-Bouhlel drove a huge cargo truck into a crowd of people celebrating Bastille Day in the seaside city, killing 86.
A further 434 people were maimed and injured.
Just weeks ago, French scholar of Islam, Gilles Kepel, told German newspaper Die Welt that the eventual goal of Islamic terrorism was not to simply murder western people in Europe.
He explained the purpose of bloody and vicious attacks on innocent people is to incite hatred among the general population of Muslims in general.
By doing this, he said they would encourage more young believers to take up arms against westerners which would eventually lead to civil war on the streets.
Professor Kepel said their goal is to build a caliphate from the ashes of crumbled European cities.
The looming threat of major civil unrest on Europe's streets is also heightened due to recent political earthquakes that make the collapse of the European Union more likely. READ MORE