Yemen peace talks will begin on Thursday in Kuwait, the UN confirmed, after the rebels finally agreed to join the negotiating table.
"The Yemeni peace negotiations will start tomorrow in Kuwait under the auspices of the UN," said UN spokesman Stephane Dujarric.
The talks had been set to open in Kuwait on Monday but were put off after the Shia Houthi rebels failed to show up.
A delegation of rebels left Sanaa on Wednesday for Kuwait after the UN offered assurances that government forces would abide by a ceasefire that went into force on April 11.
Representatives of the Houthi rebels and their allies had boarded an Omani plane bound for Kuwait via Muscat, said Sanaa airport director Khaled al-Shayef.
The UN-brokered talks had been set to open in Kuwait on Monday but were put off after the Iran-backed insurgents failed to show up over alleged Saudi violations of the ceasefire, which took effect on April 11.
Kuwaiti officials said the talks - the most important attempt yet to resolve Yemen's devastating conflict - had been rescheduled to open on Thursday.
A Saudi-led coalition launched air strikes in Yemen 13 months ago after the rebels, who had seized control of Sanaa in 2014, advanced in other parts of the country.
President Abedrabbo Mansour Hadi's government fled to main southern city Aden but its members still spend most of their time in Riyadh.
The loyalists have managed since July to reclaim large parts of the south, including temporary capital Aden, but have been unable to dislodge the Houthi rebels and their allies from Sanaa and other key areas.
On Tuesday UN Secretary General Ban Ki-moon had urged Hadi's government and the rebels to work with his envoy Ismail Ould Cheikh Ahmed "so that talks can start without further delay".
The rebels' Al-Masirah television quoted Houthi representative Saleh al-Sammad as saying they agreed to join the talks after receiving assurances from the UN envoy and ambassadors that loyalists would respect the ceasefire.
A Western diplomat in Kuwait said representatives of the five permanent members of the UN Security Council sent a message to the rebels saying they "understand their fears" and urging them to "quickly join" the talks.
The rebels had been assured the agenda for the talks would be "clear and tackle issues that could help achieve peaceful solutions," said Mahdi al-Mashat, a representative of rebel leader Abdulmalik al-Huthi.
Ceasefire monitors deploy
Writing on Facebook, Mashat warned however that "we will have the right to suspend our participation" if the assurances are not met.
A representative of the rebel-allied General People's Congress party, Yasser Alawadi, had said on Twitter that his delegation would travel to Kuwait on Thursday.
The GPC is led by former Yemeni president Ali Abdullah Saleh, who ruled the country for 33 years until 2012 and has joined forces with the Houthis.
Yemeni sources close to the talks say the insurgents are demanding the lifting of UN sanctions against Saleh and Houthi leaders.
Yemen's internationally recognised government is demanding the Houthis abide by a Security Council resolution calling for a political process and for the rebels to withdraw from cities they seized while surrendering their weapons.
Clashes have continued despite the ceasefire.
A military officer said Wednesday that 16 rebels and three pro-government fighters had been killed over the previous 24 hours in clashes in the Nahm region northeast of Sanaa.
There were intermittent clashes in Nahm and Marib, east of Sanaa, on Wednesday, local sources said.
Committees formed jointly by the rebels and loyalists to monitor the ceasefire deployed on Wednesday in both areas, said Ahmed Rabie, a spokesman for pro-government members of the committees.
