Donald Trump has used the latest Republican Presidential primary debate to repeat his calls to limit the internet in an attempt to counter terrorism.

The candidate, who still maintains a high rating with many pollsters, said: "We should be using the most brilliant minds to penetrate the internet.

"I would certainly be open to closing the internet in areas where we are at war with somebody."

The Apprentice star first called for a shutdown of parts of the internet earlier this month, saying: "We are losing a lot of people because of the internet and we have to do something.

"We have to go see Bill Gates and a lot of different people that really understand what’s happening. We have to talk to them, maybe in certain areas, closing that internet up in some way."

At the time, Trump dismissed as "foolish" the people who raised freedom of speech concerns about such proposals.

Last night Trump also forgot that it was British pioneer Tim Berners Lee who invented the internet. "Isis is using the internet better than we are using the internet, and it was our idea," he said.

Despite Trumps rather vague proclamations, encryption and social media are becoming an increasing focus in the fight against terrorists for policy makers.

Services such as Telegram, which destroys encrypted messages sent on it after a certain time, have come under particular scrutiny in the wake of the Paris terror attacks.

Isis is also known to have a manual instructing operatives on how to keep their data and location private.