In the third week of the air strikes mounted by Saudi Arabia and its allies, the International Organisation for Migration said it flew a first plane-load of 143 foreigners out of Yemen.
At a gathering in Doha, Qatar, UN Secretary General Ban Ki-moon appealed for the resumption of Yemeni peace talks and for "a cessation of military moves as soon as possible".
French Foreign Minister Laurent Fabius voiced support for Saudi efforts, saying in Riyadh that his country "has expressed its readiness to find a solution" for Yemen.
Riyadh feared the rebels would take over the entire country and move it into the orbit of Shiite Iran, Sunni Saudi Arabia's regional rival.
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Saudi Foreign Minister Prince Saud al-Faisal urged Tehran not to "assist the criminal activities" of the Huthis "against the legitimate order of Yemen and (to) stop the delivery of weapons and aid" to the rebels.
But he insisted "we are not at war with Iran," which denies arming the rebels and whose supreme leader Ayatollah Ali Khamenei has described the coalition's involvement as "criminal".
The anti-government forces have been locked in battles against forces loyal to fugitive President Abedrabbo Mansour Hadi.
Since the air campaign began, fighting has flared in 15 of Yemen's 22 provinces.
The coalition said yesterday it had conducted 1,200 strikes since March 26 and neutralised the air and missile capabilities of the anti-government forces in the air war which is accompanied by a naval blockade.
The campaign was launched as the rebels closed in on Hadi's refuge in Aden, but when fighting encroached on the city, the president escaped to Saudi Arabia.
Air strikes today targeted a presidential palace in Aden, killing six Huthis.
Raids were also conducted around Sanaa, and Huthi gatherings were targeted in both the central province of Ibb and farther east in Marib.
The Huthis have won support from renegade soldiers loyal to ex-president Saleh, but today soldiers from two brigades in Marib joined the ranks of the pro-Hadi fighters, a tribal chief said.