The warring sides in Yemen's seven-year conflict have for the first time in years agreed to a nationwide truce, which would also allow fuel imports into Houthi-held areas and some flights operating from Sanaa airport, the UN envoy said on Friday.

The UN-brokered deal between a Saudi-led coalition and the Houthi group aligned with Iran is the most significant step yet towards ending a conflict that has killed tens of thousands and pushed millions into hunger. The last coordinated cessation of hostilities nationwide was during peace talks in 2016.