U.S.-led airstrikes inside Yemen trigger a vow of retaliation by Iran-backed militants. Mass protests erupt in Yemen and fears of a full-scale regional war intensify. Also, a potential blizzard and bitter cold are disrupting the final push to the Iowa caucuses. We're tracking the candidates and severe weather with only three days to go before the first presidential votes of 2024. Learn more about your ad choices. Visit podcastchoices.com/adchoices