Donald Trump offered China's president Xi Jinping the chance to buy American weapons, the US ambassador to China has said.

At least 27 people have been killed in two separate mass shootings within hours of each other in South Africa.

Microsoft founder Bill Gates has warned that getting countries to agree on a global framework for AI could be more difficult than Cold War-era negotiations to restrict nuclear weapons.

Republic of Ireland players did not shake hands with the Israeli team before their Nations League match on Sunday night.