NBC (CIA asset Ken Dilanian): Gen. Frank McKenzie, commander of US CENTCOM, spoke with NBC News about the matter. “It just has not been proved to a level of certainty that satisfies me,” McKenzie said. “We continue to look for that evidence. I just haven’t seen it yet.” An unnamed military intelligence official also told NBC News that after reviewing the intelligence of attacks on US forces in Afghanistan over the past several years, none had been linked to any Russian bounty payments. In other news, anonymous sources say there is a report that says that Charlie Savage may have retired from...