CNN  —  Several retired military officials issued a letter in support of Vice President Kamala Harris as Republicans attempt to tie her to the chaotic 2021 US withdrawal from Afghanistan. “Vice President Kamala Harris is the best – and only – presidential candidate in this race who is fit to serve as our commander-in-chief. She has demonstrated her ability to take on the most difficult national security challenges in the Situation Room and on the international stage,” the group wrote in a