This is CNBC's Morning Squawk newsletter. Subscribe here to receive future editions in your inbox.Happy Tuesday. Breaking news this morning: Netflix submitted an all-cash offer for Warner Bros. Discovery's assets, the latest twist in the fight for the media giant's studio and streaming businesses. CNBC reported last week that Netflix was likely to adjust its bid.Stock futures are cratering this morning as investors dump U.S. assets. The three major indexes are coming off a losing week.Here are five key thin ...