Riyadh: Yemen's internationally recognised government signed a power-sharing deal with southern separatists on Tuesday, in a Saudi-brokered initiative to end a conflict simmering within the country's civil war.
Unrest in the south, which saw secessionist forces seize control of Yemen's interim capital Aden, distracted the Saudi-led coalition from its battle against Houthi rebels and raised fears the country could fall apart entirely.
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The warring factions in recent weeks held indirect talks mediated by Saudi Arabia in the kingdom's western city of Jeddah, which culminated in the deal signed in Riyadh.
Both Yemen's President Abedrabbo Mansour Hadi and STC leader Aidarous al-Zoubeidi attended the ceremony.
Analysts said the deal prevented the violent disintegration of Yemen but that secessionist sentiment could resurface in the future.
"In the short term, the agreement will allow the coalition to stick together and focus their efforts on fighting the Houthis instead of each other," said Elisabeth Kendall, senior research fellow at Oxford University.
"In the long term, it simply kicks the can down the road on southern secession. Southern ambitions won't just go away. The question is, can they be temporarily reined in."
The military coalition led by Saudi Arabia and the United Arab Emirates (UAE) intervened in Yemen in 2015 as the Houthi rebels closed in on Aden, prompting Hadi to flee into Saudi exile.
The conflict has since killed tens of thousands of people -- most of them civilians -- and driven millions more to the brink of famine in what the United Nations calls the world's worst humanitarian crisis.
The south was an independent state before being forcibly unified in 1990, and the STC has said it wants to regain its lost status.