WATCH: Kellyanne Conway Reacts to New Senior Role in Trump White House

'Not a Normal Presidency': Reich Calls For 'Peaceful Resistance' to Trump

Trump: Berlin Truck Attack 'An Attack on Humanity'

Steve Hilton, former policy director for U.K. Prime Minister David Cameron, believes that Monday's attack on a Berlin Christmas market shows that Germany's refugee policy has been a "complete disaster."

On "Special Report" tonight, Hilton explained that suspect Anis Amri was one of hundreds of thousands of asylum-seekers from the Middle East and Africa who were invited into Germany by Chancellor Angela Merkel.

He added that this isn't just a problem in Germany because of the key flaw of the European Union: open borders.

"If you want to be in the EU, you have to accept open borders," Hilton said. "So, I think the only way this is actually going to change is through the political system, through electing new governments that actually have a different view."

Watch more above, and share your reaction in the comments.

Celebs Boycott Inauguration? Lahren Says 'Tolerance Is One-Sided' on the Left

O'Reilly: The 'Hidden Reason' the Left Wants to Abolish Electoral College

WATCH: Ailing Marine Vet Gives Trump, Gen. Mattis One Final Salute