Story highlights Donald Trump has long called for a ban on Muslims entering the U.S. but his position appears to have soften this week

The real estate mogul said he's "flexible on the issues"

Washington (CNN) Presumptive Republican presidential nominee Donald Trump continued Friday to define his proposal to ban Muslims from entering the country, saying he wants to study the issue of radical Islam and that he was "flexible" in his response.

"We have to do something and you're not going to do something about until you know what the problem is. I've spoken to (former New York City mayor) Rudy Giuliani we're going to put together a group. We're going to look at the problem, we're going to study the problem, it's a temporary ban," Trump said Friday on Fox News' "Fox and Friends." "I feel very strongly that we have to find out what the problem is. When you look at San Bernardino, when you look at Paris, when you look at all of these horrible, horrible acts of hatred, this is pure hatred. We have to find out and get to the bottom of the problem before we can solve it."

But he argued Friday that he wasn't changing his tone at all.

"Look, anything I say right now -- I'm not the president, everything is a suggestion. No matter what you say, it is a suggestion," Trump said Friday on NBC's "Today," adding later, "No, I'm not softening my stance at all but I'm always flexible on issues."

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