<span style="color: #222222;">Yemeni separatists backed by the United Arab Emirates began withdrawing on Sunday from positions they seized from the internationally-recognised government in the southern port city of Aden.<br />''<br />''Both the southern separatists and the government forces are ostensibly allies in the Saudi-led military coalition that's been battling the Houthi rebels in northern Yemen since 2015.<br />''<br />''But a major rift in the coalition was exposed during the four days of fighting for control of Aden, as the UAE-backed Southern Transitional Council wrested the city from government forces. More than 70 people were killed in the clashes.<br />''<br />''The UAE is the dominant force in Yemen's south, where it has an estimated 90,000 allied militiamen and has long been at odds with the government, which is largely based in Saudi Arabia.</span><br />