Palestinians living in the Israeli-blockaded enclave of Gaza have long endured an unstable and costly electricity supply, so Yasser al-Hajj found a different way: solar power.

Looking at the rows of photo-voltaic panels at his beachfront fish farm and seafood restaurant, The Sailor, he said the investment he made six years ago had more than paid off.

"Electricity is the backbone of the project," Hajj said, standing under a blazing Mediterranean sun. "We rely on it to provide oxygen for the fish, as well as to draw and pump water from the sea."

Qatar's World Cup squad trained on home territory for the first time in four months Sunday as they seek to overcome some nervy displays in preparatory matches.

Hundreds of fans, mainly migrant workers, turned out to see the players make their rare appearance in a Doha stadium after being kept under wraps at camps in Spain and Austria.

Qatar, which has spent billions of dollars on new stadiums for the first World Cup in an Arab country, is desperate to see the side get past the first round group against Netherlands, Senegal and Ecuador.

A six-month truce in Yemen's war has expired without being extended, the United Nations' special envoy said on Sunday, urging calm and adding that negotiations are continuing.

Hans Grundberg said efforts to extend and expand the ceasefire for a further six months had not been successful.

"The UN special envoy regrets that an agreement has not been reached today, as an extended and expanded truce would provide additional critical benefits to the population," a statement said.

At a bazaar in north Tehran, merchants are paying a high price since protests erupted across Iran more than two weeks ago over the death in custody of young Kurdish woman Mahsa Amini.

"It was hardly great even before, because of the economic crisis that has hit our country under US sanctions," sighed 53-year-old shopkeeper Mehdi, sitting on a stool at a stall where he sells T-shirts.

"But now with the protests our work has been cut in half," said Mehdi, who like other merchants interviewed cautiously avoided comment on the protest movement itself.

Israel on Sunday praised a US proposal to resolve the country's maritime border dispute with Lebanon, building further momentum towards an agreement between two nations still technically at war.

The draft agreement floated by US envoy Amos Hochstein aims to settle competing claims over offshore gas fields and was delivered to Lebanese and Israeli officials at the weekend.

At least 92 people have been killed as Iran has cracked down on women-led protests sparked by the death of Mahsa Amini after her arrest by the notorious morality police, the group Iran Human Rights said Sunday.

As protests stretch into a third week, President Ebrahim Raisi on Sunday said that the "enemies" of Iran had "failed in their conspiracy".

Fifty days before the World Cup kicks off in Qatar, workers are pouring concrete and hammering through the night to ready luxury hotels and bargain apartments for a million or more football fans.

Hundreds of migrants are labouring inside the 211 metre (696 feet) high Katara Towers, dramatically shaped like intertwined scimitar swords, where VIP guests of world football's governing body FIFA will stay during the tournament.

The wealthiest will pay thousands of dollars a night for rooms with marble wine cellars and a lobby with one of the world's biggest chandeliers.

Several thousand people marched in Montreal and other Canadian cities Saturday in solidarity with protests sparked by the death of Mahsa Amini in the custody of Iran's notorious morality police.

A wave of street violence has rocked Iran since Amini, 22, died days after her arrest for allegedly failing to observe the Islamic republic's strict dress code for women.

Protests were held across the country for a 15th consecutive night on Friday despite a bloody crackdown that rights groups said has left more than 75 people dead.

Online travel agency Booking.com has added warning banners to both Israeli and Palestinian properties in the occupied West Bank, the company said Saturday, under a new policy on conflict zones that Israel hailed as a "victory".

"Please review any travel advisories provided by your government to make an informed decision about your stay in this area, which may be considered conflict-affected," the company's website now says, in searches for accommodation in Jewish settlements or Palestinian localities.

Bodies strewn everywhere, a ceiling caved by blastwaves, classmates dragging each other to safety -- survivors of a suicide bombing in a Kabul study hall described scenes of horror after what should have been a typical exam.

Nonetheless, faced with a death toll of mostly women, students of the minority Hazara community were unbowed by the obstacles to education in Afghanistan -- pledging Saturday they will return to class.