COMMERCIAL ships face increasing dangers at sea after armed groups have attacked and seized vessels in waters around the Red Sea and off the coast of Yemen, adding to perils for seafarers, shipping officials said. An attempted hijacking of a commercial vessel in the Gulf of Aden recently appears to have been carried out by armed Somali pirates and not Yemeni Houthis, despite the firing of missiles from Houthi-controlled territory in Yemen afterwards, the Pentagon said. The incident is the...