Yemeni Houthis have withdrawn from the crucial reconciliation talks after gunmen shot dead the representative of the Shia group. Security officials say Ahmed Sharafeddin was gunned down on his way to a hotel where the talks are being held in the capital Sana\'a. The university professor of law was a leading figure in the group. Sharafeddin is the second Houthi representative killed ahead of the talks. His assassination comes as the fighters are engaged in heavy clashes with a tribe linked to Salafists in Amran province. At least 22 people have been killed and nearly two dozen injured in the battle over the past two days Show Less >>