Retired four-star US Army General Barry McCaffrey slammed President Donald Trump for suggesting the use of what he called “dangerous” American cities as “training grounds” for the military.

McCaffrey — in an appearance on MSNBC’s “Morning Joe” — stressed that the hundreds of thousands of troops with the National Guard are a “national treasure,” describing them as “our friends and neighbours” who are well-equipped to respond to disasters.

“They’re disciplined, they’re responsive, but we do not want American military personnel on the streets of........

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