Story highlights Trump blasted President Barack Obama and Democratic frontrunner Hillary Clinton

Trump's speech Monday drew 9,750 people to the Knoxville Convention Center

Knoxville, TN (CNN) Donald Trump on Monday focused on national security in a speech to a raucous crowd of nearly 10,000 people, days after the terrorist attacks in Paris sent shockwaves around the world and rippled through the 2016 presidential race.

Slamming President Barack Obama and Democratic presidential front-runner Hillary Clinton for not referring to the threat from ISIS as "radical Islam," Trump told his supporters here that it's time to "talk about" the threat and pledged a more aggressive response if elected president.

"You hear the term radical Islamic terrorism. He won't say it. He won't say it," Trump said referring to Obama. "I mean you can't solve a problem if you refuse to talk about what the problem is. And he won't talk about it. I don't know what 's going on with this man. And you know who else won't talk about it? Hillary. She won't talk about it."

Trump also suggested that "weak and ineffective" leadership was to blame for the attacks in Paris, which killed at least 129 people.

"When you're weak and ineffective, bad stuff does happen. And that's what we're seeing," Trump said at the top of his speech as he opened with the Paris killings, but did not elaborate on the remark.

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