By Aziz El Yaakoubi RIYADH (Reuters) -Yemen’s warring parties agreed to extend a U.N.-brokered truce for two months under the same terms as the original deal that was due to expire on Thursday, the U.N. envoy to Yemen said. Delegations from the Saudi-backed government and the movement are expected to return to the Jordanian capital Amman to continued talks, Yemeni official said. The truce had seen a halt to major military operations in Yemen and cross-border attacks in the seven-year war between a Saudi-led coalition and the Iran-aligned Houthi group, and helped to ease a humanitarian crisis t…