US President Donald Trump said on Tuesday the military should use US cities as training grounds for a "war from within," in a speech to a rare meeting of top officers. Republican Trump told hundreds of generals and admirals summoned from around the world to be ready for a greater role in crackdowns on Democrat-run cities, including Chicago. The assembled top brass were separately warned by Pentagon chief Pete Hegseth of a different challenge, as he vowed to eliminate "fat generals" and to roll back what he called "decades of decay." "I told Pete, we should use some of these dangerous cities as training grounds for our military," Trump said in front of a huge American flag at a military facility in Quantico, Virginia. Trump added that "we're going to straighten them out one by one, and this is going to be a major part for some of the people in this room. That's a war too – it's a war from within." Trump began his speech by railing against so-called "woke" practices in the US mi...