UAE-backed separatists pull back after seizing Yemen's Aden
The Southern Transitional Council had wrested control of the city from government forces after four days of fighting that killed more than 70 people and exposed a major rift in the Saudi-led coalition, which has been battling Iran-aligned Houthi rebels in northern Yemen since 2015.
Saudi Arabia and the United Arab Emirates lead the coalition, which is ostensibly fighting the rebels on behalf of the government.
But the UAE is the dominant force in the 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.
The two US-allied Gulf monarchies appear to have diverging interests in Yemen, where the stalemated war has spawned the world's worst humanitarian crisis and drawn mounting criticism in Washington.
Saudi Arabia views the Houthis as a major national security threat, in part because the rebels have launched numerous cross-border missile attacks targeting its capital and other cities.
The UAE, which recently began withdrawing troops from Yemen, appears more interested in securing its interests in the south - which lies along major trading routes linking Africa to Asia - than waging a war that appears increasingly unwinnable.
Saudi Arabia had responded angrily to the takeover in Aden, calling for an immediate cease-fire and ordering the separatists to pull back as Saudi troops moved to secure government buildings.
On Sunday, Saudi state TV reported that the separatists had begun withdrawing.
The coalition said on Sunday it struck a target that posed a "direct threat" to the government, without elaborating, and warned of further military action if the separatists did not pull back.
Yemeni officials said the UAE-backed fighters had withdrawn from the streets but still held military positions seized in recent days and were still stationed outside the presidential palace.
They spoke on condition of anonymity because they were not authorised to brief media.
The crisis began last week during the funeral of a separatist leader killed in a Houthi rocket attack who was laid to rest by supporters in a cemetery near the presidential palace.
Supporters attacked the palace, and Hani Bin Braik, a separatist leader and former Cabinet minister, called for the overthrow of the government.
The UAE and its allies view President Abed Rabbo Mansour Hadi's government as being too close to the Muslim Brotherhood, a regional Islamist movement that the Gulf monarchies view as a threat.
Bin Braik tweeted on Sunday that the Southern Transitional Council would not "negotiate under duress".
He said his group accepts Hadi as president and is committed to the coalition but wants his Cabinet replaced. The government has said it will not negotiate with the separatists until they hand over all the military positions they seized.
The southern separatists advocate secession and the division of Yemen into two countries, in the north and south, as it was during much of the Cold War before unifying in 1994.
Interior Minister Ahmed al-Maisar acknowledged that the government forces had been defeated, and criticised Saudi Arabia and Hadi for remaining silent during the four days of fighting.
He spoke in a video released on Sunday but filmed a day earlier in Aden as he awaited evacuation to Saudi Arabia, where Hadi has been based for five years.
He accused the UAE-backed separatists of looting government properties and said over 400 vehicles supplied by the UAE had been deployed in Aden.
The UN Office for the Coordination of Humanitarian Affairs said in a statement Sunday that preliminary reports indicate as many as 40 people have been killed and 260 wounded in Aden since Aug. 8.
Elsewhere in Yemen, the Houthi rebels claimed an airstrike by the Saudi-led coalition killed at least nine people in the northern Hajjah province.
The Houthi-run health ministry said the strike in Mustaba district also wounded at least 18 people.
A spokesman for the coalition could not immediately be reached for comment.
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