The pro-government's Giants Brigades said its first contingents had arrived in the Bab el-Mandeb area. By Timour Azhari and Mohammed GhobariRIYADH, Oct 5 (Reuters) - Saudi-backed Yemeni government forces seized key positions on the Bab el-Mandeb Strait on Monday, military and government sources said, as they fought to reverse last month's advances by the Iran-backed Houthis and drive them from the vital waterway. Key points and original sources are listed below.

• The pro-government's Giants Brigades said its first contingents had arrived in the Bab el-Mandeb area.S1

• By Timour Azhari and Mohammed GhobariRIYADH, Oct 5 (Reuters) - Saudi-backed Yemeni government forces seized key positions on the Bab el-Mandeb Strait on Monday, military and government sources said, as they fought to reverse last month's advances by the Iran-b...S2

• Army of internationally recognised gov't claims key gains near strait before Saudi, Pakistani, Turkish officials meet.S3

• Saudi-backed Yemeni government forces seized key positions on the Bab el-Mandeb Strait, military sources said, as they fought to reverse advances by the Iran-backed Houthis.S4