The United Arab Emirates said on Tuesday it was pulling out its remaining forces in Yemen after Saudi Arabia backed a call for UAE forces to leave the country within 24 hours. It did not say when the withdrawal would occur. The move followed a Saudi-led coalition air strike on the southern Yemeni port of Mukalla. The attack on what Riyadh said was a UAE-linked weapons shipment marked the most significant escalation between Riyadh and Abu Dhabi to date in a widening rift between the two Gulf...