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There are new questions about the future of National Security Adviser H. R. McMaster, as President Donald Trump is reportedly growing more frustrated with the lack of progress in Afghanistan.

Earlier this week, two Army soldiers were killed in Afghanistan's Kandahar Province when their convoy was hit by an explosive device. On Thursday, a suicide bomber attacked a NATO convoy near the town of Qarabagh, killing one and injuring several more.

On "The Story" tonight, Lt. Col. Michael Waltz (Ret.) said Trump is right to be frustrated with the lack of a comprehensive strategy in Afghanistan.

Despite that, Waltz cautioned against simply pulling U.S. soldiers out of the country, as Al Qaeda, ISIS and other groups would make gains in the wake of the Taliban.

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Guest host Dana Perino asked if McMaster is on thin ice at the White House.

Waltz said there have long been factions in the Republican Party, with those who hold isolationist views and those who want to lead abroad, and that's what this "tension" appears to be centered on.

As for rumors that Trump is considering shifting CIA Director Mike Pompeo to national security adviser and sending McMaster to command U.S. forces in Afghanistan, Waltz said McMaster would do a great job, but he wants to see him stay in his current position.

"I think he's one of the more brilliant officers of his generation," Waltz said.

Watch more above.

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