He said in a statement that he had spoken with leaders of the United Arab Emirates and "made clear our desire to address their security concerns while preserving the free flow of humanitarian aid and life-saving commercial imports". "We are continuously working with the International Committee for Red Cross to provide the best environment and circumstances for the work of United Nations organisation".
During his meeting with Yemen's new Foreign Minister Khaled Alyemany, Mr Guterres stressed that "everyone should redouble efforts to find a political solution and avoid a fierce, bloody battle for Al Hodeidah", UN spokesman Stephane Dujarric said.
The ministry's official website reported that at least "250 Houthi militiamen were killed in battles with Yemeni nationalist forces in the south part of Hodeidah province during the past week".
The Houthi Shia militia has yet to comment on the claim.
Saudi Arabia launched a war against the Houthis in March 2015, after the rebels drove Yemen's internationally recognised government from the capital, Sanaa.
He said "90 percent of food, fuel and medicines in Yemen are imported" - and 70 percent come through Hodeida, including desperately needed humanitarian aid for over 7 million people.
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After the summit, Trump attacked Trudeau as "dishonest" and "weak." and accused him of making false statements around the tariffs. President Trump promised athletes would be able to enter the USA "without discrimination" ahead of the decision, per CNN .
The UN considers Yemen to be the world's worst humanitarian crisis, with more than 22.2 million people in need of assistance.
Save the Children said on Sunday that it continued to treat "tens of thousands of children in Hodeidah for acute malnutrition, and diseases like diphtheria and malaria".
The war has killed more than 10,000 people, displaced three million and unleashed the world's most urgent humanitarian crisis in the impoverished Arab state which is struggling with a starvation and cholera epidemic, according to the United Nations.
The United Nations, which has for years unsuccessfully sought to temper the conflict is pushing for a ceasefire in an effort to prevent an attack on Hodeidah.
Griffiths has been working on a peace plan that calls on the Houthi group to give up its ballistic missiles in return for an end to a Saudi-led coalition bombing campaign and a transitional governance agreement.
The coalition maintains that the Red Sea port is used by Yemen's Huthi rebels to smuggle weapons.
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