The United States and Britain have again attacked positions of the militant Islamist Houthi rebels in Yemen. A total of 36 targets in 13 locations were targeted, the US Defence Department said in a statement issued in Washington on Saturday evening. These included weapons depots, missile systems and launchers, air defence systems and radar devices. This was the third joint US-British operation in recent weeks against the Iran-backed militia. The Houthis have repeatedly targeted merchant ships on the Red Sea since the Gaza war between Israel and the Islamist terrorist organization Hamas began i…