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At a forum hosted by the Republican Jewish Coalition on Thursday, Republican presidential front-runner Donald Trump called out President Obama for refusing to admit that radical Islamic terrorism is behind many of the deadly attacks happening on American soil.

"Radical Islamic terrorism. And I'll tell you what, we have a president that refuses to use the term. He refuses to say it," Trump said. "There's something going on with him that we don't know about."

On "America's Newsroom" this morning, Trump's son Eric Trump explained that his father is frustrated with the president's refusal to acknowledge the problem.

"How do you defeat an enemy if you can't even say what they are?" Trump said to Martha MacCallum. "We have this shooting in Paris, this shooting in California, many attacks all over the world."

As for his father's comments that there's "something going on" with Obama, Trump said it just seems like the president is so disconnected and unable to face all the country's problems.

"It does very much seem like something is going on with the guy."

Watch more above and see Donald Trump's full address at the Republican Jewish Coalition forum below.

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