At least 78 bodies have been buried, while there are fears that around 170 people were killed altogether.
The Ukrainian president also said a large number of people were "officially missing", meaning the total death toll is thought to be much higher.
Their call comes in the wake of a flurry of visits by Western leaders to China in recent months.
Four images seen by BBC Verify show partially clothed women with their faces and bodies unredacted.
Gus Lamont was last seen playing outside his home on a remote sheep station on 27 September.
More aid has been allowed into Gaza since the ceasefire began three months ago, but the UN says it is nowhere near enough.
A rare phantom jellyfish has been spotted by scientists exploring the deep sea in the South Atlantic.
"She is without any medicine. She needs it to survive," says the NBC host about missing 84-year-old Nancy Guthrie.
The event was attended by representatives of more than 50 countries, the White House said.
The justice department says its review of the files is over, but the story is again proving to have a life of its own.
A coroner has found Joel Cauchi's doctor failed to heed warnings he was having a relapse of schizophrenia.
Some Indian states have said they are examining Australia's law curbing social media for children.
A student uprising promised a new dawn in Bangladesh but old parties are tipped to win a landmark election.
With his new album Britpop breaking a record set by the Beatles, the singer takes a moment to celebrate.
Black, crispy, often flat and square, dried seaweed is growing in popularity - but also in price.
The BBC's Paul Kirby reports from outside the court in Oslo, where Marius Borg Høiby denies rape and many other serious charges.
Russia's gains on the battlefield have forced Natalia to rebury her husband.
A rare cold snap across the state has made the reptiles immobile and ripe for capturing, says the state's wildlife agency.
Official estimates suggest that around 55% of the town's drinkable water is lost to leaking pipes.
BBC Senior international correspondent Orla Guerin joined a special operation over Colombia's cocaine heartland, tasked with destroying crude cocaine labs hidden deep in the jungle.