While flooding that has devastated Brazil's Rio Grande do Sul state has yet to subside, another scourge has spread across the region: disinformation on social media that has hampered desperate efforts to get aid to hundreds of thousands in need.

Among fake postings that have stirred outrage: That official agencies aren't conducting rescues in Brazil's southernmost state. That bureaucracy is holding up donations of food, water and clothing. One persistent rumor contends that authorities are concealing hundreds of corpses, said Jairo Jorge, mayor of the hard-hit city of Canoas.

A University of Hawaii study examining the health effects of last year's deadly wildfires on Maui found that up to 74% of participants may have difficulty breathing and otherwise have poor respiratory health, and almost half showed signs of compromised lung function.

The data, gathered from 679 people in January and February, comes from what researchers hope will be a long-term study of wildfire survivors lasting at least a decade. Researchers released early results from that research on Wednesday. They eventually hope to enroll 2,000 people in their study to generate what they call a snapshot of the estimated 10,000 people affected by the fires.

Israel's Defense Minister Yoav Gallant said Thursday that more troops would "enter Rafah" as military operations intensify in Gaza's far-southern city.

The operation in Rafah "will continue as additional forces will enter" the area, Gallant said, adding that "several tunnels in the area have been destroyed by our troops... this activity will intensify".

With guests including Paul Simon and Seth Meyers, PEN America will gather Thursday night for its annual gala, a dressed-up, high-profile event raised even higher because some wondered if it would be held at all.

The literary and human rights organization has faced ongoing criticism over its response to the Israel-Hamas war, with hundreds of writers alleging that PEN showed limited concern over the suffering of Gaza residents and the deaths of Palestinian writers and journalists. PEN has already canceled its spring awards ceremony after dozens of nominees withdrew and its World Voices festival after hundreds signed an open letter saying they wouldn't participate.

The United Nations' top court opens two days of hearings on Thursday into a request from South Africa to press Israel to halt its military operation in the southern Gaza city of Rafah, where more than half of Gaza's population has sought shelter.

It is the fourth time South Africa has asked the International Court of Justice for emergency measures since the nation launched proceedings alleging that Israel's military action in its war with Hamas in Gaza amounts to genocide.

Israeli Prime Minister Benjamin Netanyahu has fended off criticism that he is not planning for a postwar reality in the Gaza Strip, saying it was impossible to prepare for any scenario in the embattled Palestinian enclave until Hamas is defeated.

Netanyahu has faced increasing pressure from critics at home and allies abroad, especially the United States, to present a plan for governance, security and rebuilding of Gaza.

Nearly 300 signatories have signed an open 10-point letter before next month's European Parliament election, saying lawmakers should be putting democracy at the top of their agenda in an increasingly authoritarian world.

The letter, which was released on Thursday, calls for widening powers to uphold the rule of law, ensuring new digital technologies safeguard human rights, and to place democracy at the heart of the European Union's security, migration, energy, and trade agendas.

Slovakia's populist Prime Minister Robert Fico was shot multiple times and gravely wounded Wednesday, but his deputy prime minister said he believed Fico would survive.

The prime minister had been greeting supporters at an event when the attempted assassination took place, shocking the small country and reverberating across Europe weeks before an election.

The Ukrainian army on Thursday said it had halted the Russian advance in some zones of the northeastern Kharkiv region, where Moscow's troops launched a new offensive on May 10.

"The situation in the Kharkiv sector remains complicated but is evolving in a dynamic manner. Our defence forces have partially stabilised the situation, the advance of the enemy in certain zones and localities has been halted," the army spokesman said.

Chinese leader Xi Jinping said Thursday that he and Russian counterpart Vladimir Putin agreed on the need for a "political solution" to the war in Ukraine, following talks between the two presidents in Beijing.

"Both sides agree that a political solution to the Ukraine crisis is the correct direction," Xi told media alongside Putin in a joint press conference broadcast by Russian television.