The two rivals held first direct talks in years, but experts say several sticking points remain.
Two officials from pro-government forces say that the rebels were mounting a concerted push that had left 26 loyalist soldiers dead as well as 44 from Houthi ranks.
The loss of Marib would be a heavy blow for the Yemeni government, currently based in the southern city of Aden, and for its Saudi backers.
Compared to four years ago, Zakat funds increased in record numbers last year, helping more than two million refugees across the world, according to UNHCR.
Yemen’s Shia political alliance, which fought against a Saudi-led Gulf alliance for years, seeks more concessions from Riyadh, experts say.
A recent Save the Children report says over 2,300 children were killed from 2018 to 2020 in the war between Iran-backed rebels and Saudi-led coalition supporting the government in Yemen.
The initiative would include a UN-supervised nationwide ceasefire and reopening of air and sea links blockaded by the Saudi-led coalition, main pre-conditions of the Iran-backed rebels before any peace deal.
Protesters say they are angry over a lack of services and delayed salaries, urging the UN to pressure the government into implementing economic reforms.
UN special envoy Martin Griffiths told the Security Council that there had been a dramatic deterioration in the more than six-year-long war with a Houthi offensive on Marib, putting millions of civilians at risk.
A deadly fire started in an overcrowded detention centre last week when Houthi security forces reportedly fired projectiles into a locked hangar. Migrants have staged demonstrations demanding a probe into the incident.
Prime Minister Maeen Abdulmalik and other members of the internationally recognised government remain holed up inside the building in the interim capital, two Yemeni officials say.
The raids in Yemen's rebel-held capital come after the coalition said it intercepted 10 drones launched by the rebels on Sunday, in a sharp escalation in cross-border attacks on the kingdom.
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