Aid agency received approval from Saudi-led coalition to enter Yemen . It has been negotiating for 11 days to deliver emergency food and supplies . weeks of coalition airstrikes on Iran-backed Shi'ite Houthi rebel positions have left more than 500 people dead and many more displaced . News comes as Pakistan begins talks to join the coalition of Sunni nations .
Aid agency received approval from Saudi-led coalition to enter Yemen . It has been negotiating for weeks to deliver emergency food and supplies . 11 days of coalition airstrikes on Iran-backed Shi'ite Houthi rebel positions have left more than 500 people dead and many more displaced . News comes as Pakistan begins talks to join the coalition of Sunni nations .