Warren Buffett says new health care venture won't be easy

Warren Buffett told CNBC this morning that the new health care venture between his firm, Amazon and JPMorgan Chase hopes to hire a CEO to run the partnership by the end of this year. He also said there's still a chance they may not even form a company, and if they do, it'll take a lot of work to lower health care costs through the "complicated" system: "It's not going to be easy."

Go deeper: The thick fog around this health care venture.