Qatari Prime Minister and Foreign Minister Sheikh Mohammed bin Abdulrahman Al Thani said on Wednesday talks on a Gaza ceasefire and a release of hostages are at a "delicate phase".
"We are trying as much as possible to address this stumbling block," he added, without giving further details.
Qatar's premier condemned what he described as the policy of "collective punishment" still followed by Israel in its war against the enclave's ruling Hamas and the latest escalation in the Israeli-occupied West Bank.
The ceasefire discussions, mediated by Qatar and Egypt, are continuing as a humanitarian crisis devastates Palestinians in Gaza with severe shortages of food, medicine and hospital care.
The war was triggered when Hamas burst into southern Israel from Gaza on October 7, killed 1,200 people and took 253 hostages into the enclave, according to Israeli tallies. Israel has retaliated by pounding Gaza in an air and ground offensive which has killed almost 34,000 Palestinians, according to Gaza health authorities.
US immigration agents shot and killed a US citizen in Minneapolis on Saturday, officials said, sparking fierce protests and condemnations from local leaders in the second such incident this month.
More than 400,000 customers in the US as far west as Texas were without power and more than 9,600 flights were expected to be cancelled on Sunday ahead of a monster winter storm that threatened to paralyse eastern states with heavy snowfall.
Around 1,700 apartment buildings in the Ukrainian capital Kyiv were still without heating following a Russian missile and drone attack earlier this week, Kyiv Mayor Vitalii Klitschko said on Sunday.
Seven people have died and 82 are missing after a landslide hit in Indonesia's West Java province, Indonesia's disaster mitigation agency said on Saturday, amid reports of heavy rain in the area.
The death toll from a bombing at a wedding near the Afghan border rose to seven on Saturday, police said, as Pakistan struggles to deal with a rising wave of attacks.