Washington (CNN) President Donald Trump said Thursday that he is planning to withdraw thousands of US forces from Afghanistan but will keep 8,600 troops in the country, at least for the time being.

"We're going down to 8,600 and then we make a determination from there as to what happens ... we're bringing it down," Trump told Fox News Radio, again repeating that the US "could win that war so fast if I wanted to kill ten million people there ... which I don't."

Trump met with top national security advisers earlier this month at his golf course in Bedminster, New Jersey, to review a US-Taliban peace plan.

The US currently has about 14,000 service members in Afghanistan, alongside NATO troops, helping to train and advise Afghan troops and conducting counterterrorism operations. The peace plan is expected to formalize a significant withdrawal of US forces after nearly 18 years of war.

But Trump stressed that the US will maintain a troop presence in Afghanistan despite the withdrawal.

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