According to the Public Ministry of Hamburg, the number of Muslims in Germany supporting violent Jihad in Germany is increasing rapidly. If the estimated (ten) thousands of Muslim fighters, disguised as refugees, would decide to simultaneously order a massive coordinated terrorist attack, the German GSG-9 special police would not be able to prevent it.
In April 2016, the GSG-9 raided a Mosque in Germany and found a huge arsenal of weapons, including Ak-47s and RPGs.
In 2015, similar raids happened. Not just in Germany, but also in France. The French authorities seized over 334 'weapons of war' and made over 223 arrests during in one year during the aftermath of the terrorist attacks that happened in Paris. All of this is only the tip of the iceberg. It is said that in Hamburg alone, over 300 radical Islamic extremists reside.
Continuously new police raids in Europe lead to new discoveries of weapon arsenals. It seems like the radical moslems are preparing for not just lone-wolf attacks, but a massive simultaneous assault in the future.
It would lead to Western/Northern Europe falling into a civil war. The number of Muslims in these countries is growing rapidly. In my country, the Netherlands, we had 1000 Muslims in the 1950s, and now it's over 1 million. Over half of these support Jihad. If the terrorist cells in Britain, Germany, Benelux, Scandinavia and France would decide to launch simultaneous revolt, they could easily radicalize the un-radicalized. Considering their large numbers and the extremely small European armies, it would not surprise me if they were able to conquer most major cities, including Paris, London, Hamburg, Brussels, and even larger sections of these countries.
But of course the terrorists aren't complete idiots. It's still too early to have such an attack. Time is completely in their favour. In 5 to 10 years from now, the Muslim populations will have grown many millions more. In some countries like France and Germany today, the age group between 18-35 is already 50% native, 50% foreign.
They only have to wait until the day is right, strike and strike hard and they can collapse all these nations. Last year, more Muslims entered Europe than the entire armies of Benelux, Germany, France and Britain combined.
Meanwhile the Western and Northern Europeans continue to dig their heads into the sand. When the day comes, the European men and women will be forced into a draft, but as a result of our societies, the willingness to fight for our nations are at all time lows. What will the end result be?
Sources:
http://www.express.co.uk/news/world/684623/Islamist-extremists-hide-huge-stockpile-of-weapons-near-German-mosque
http://dailycaller.com/2016/06/27/german-authorities-find-weapons-of-war-during-raid-near-radical-mosque/
http://www.france24.com/en/20151202-france-cazeneuve-shuts-down-radical-mosques-paris-attacks