(The Washington Post) – Yemeni forces backed by the United Arab Emirates have rapidly advanced to less than 10 miles from the rebel-held seaport of Hodeida, threatening to attack despite U.S. and United Nations warnings against undermining hoped-for peace talks and exacerbating Yemen’s humanitarian ­crisis. “It’s a very fluid situation,” a senior U.S. official said after talks in Riyadh, the Saudi Arabian capital, last week with Emirati and Saudi officials. “We have really advised them to proceed with extreme caution, not to make a move on the city or the port for all sorts of reasons.”