The death toll in Sri Lanka's prison clash rose Tuesday to 26 — seven prison officials and 19 inmates — with authorities alleging the skirmish was linked to narcotic drugs and gang rivalries but prison welfare groups saying overcrowding and poor conditions had much to do with it, too.

The unrest at the prison in Negombo, about 35 kilometers (22 miles) north of the capital, Colombo, started between inmates on Sunday and turned violent on Monday after the inmates attacked the guards who intervened. Officials said the inmates even tried to break through the main gate, but were stopped.

U.S. President Donald Trump said Tuesday he was "very disappointed" by the response of NATO allies in Europe to his war with Iran after arriving in Turkey for the alliance's summit.

"I was very disappointed with NATO," Trump told journalists as he met Turkey's President Recep Tayyip Erdogan.

A landslide in China's northwestern Gansu province killed five people on Tuesday, with rescuers working to locate 12 others still missing, state media reported.

At least 33 people were initially reported missing after the landslide in a village near Gansu's Longnan city, state news agency Xinhua said.

NATO allies will unveil billions in new contracts to bolster their ability to "defer and defend", Secretary General Mark Rutte said Monday on the eve of the military alliance's summit.

Britain on Monday unveiled sanctions against seven Russian scientists and two research labs said to have helped develop chemical weapons used in two attacks.

A series of attacks by Sudan's paramilitary Rapid Support Forces near the western border with Chad have razed multiple villages and displaced thousands of people, according to two survivors and the United Nations.

The RSF has been at war with the Sudanese army since April 2023, and has been accused by the UN of committing repeated massacres against Darfur's non-Arab ethnic groups, including the Zaghawa who inhabit the western villages of North Darfur state.

Russia launched waves of missiles and drones targeting Kyiv early Monday that killed at least 10 people, authorities said, hours after Ukraine's president warned that another large-scale attack was imminent.

Another 46 were injured, according to local officials, as emergency workers combed through rubble looking for survivors at residential high-rise buildings in two locations that suffered direct hits.

President Donald Trump plans to meet with Ukrainian President Volodymyr Zelensky and Syrian President Ahmad al-Sharaa on Wednesday while attending the NATO summit in Turkey, the White House said. Those discussions will come as Kyiv tries to refocus Trump's attention on the conflict with Moscow and as Trump has publicly mused about Syria's role in the Middle East.

White House spokesperson Anna Kelly confirmed the meetings in a call with reporters while previewing the upcoming summit in Ankara, where Trump also plans to meet with Turkey's President Recep Tayyip Erdogan on Tuesday. Before returning to the United States on Wednesday, Trump is scheduled to have a news conference, Kelly said.

Iran's ambassador to China insisted that new fees would be charged to ships transiting the Strait of Hormuz -- an idea rejected by Washington -- while assuring that "friendly" nations would receive special treatment.

The initial deal struck between Iran and the United States to end their war stipulated that commercial ships would transit the strait free of charge for 60 days, but it remains unclear what will be in place after that period.

Prayers were held Sunday over the casket of Iran's late supreme leader Ali Khamenei, the second day of funeral ceremonies that have drawn huge crowds to pay their final respects in Tehran.

Khamenei ruled the Islamic republic from 1989 until he was killed aged 86 in an airstrike on the first day of the U.S.-Israeli war with Iran on February 28.