A top Yemeni official on Monday said the United Arab Emirates (UAE) and its militias in Aden undermined the agreement reached in Riyadh. "It is the UAE and its militias [the forces of the Southern Transitional Council] in Aden that caused the failure of the Riyadh Agreement [...] We have said this over and over again," Transport Minister Saleh al-Jabwani said on Twitter. "What happened yesterday to the National Army ...