Yemen’s Houthi rebels launched at least one missile into the busy waters of the Red Sea over the weekend, the US Navy said on Monday, raising the risks of their fire striking one of the many commercial vessels using a waterway crucial to global shipping. The Red Sea connects into the Suez Canal, which sends cargo and energy shipments from the wider Middle East on to Europe. Since seizing Yemen’s capital in September 2014, the Houthis have launched missiles, deployed bomb-laden drone boats and released mines into the Red Sea. The missile fire took place on Saturday in the Red Sea, the Navy said…