Families of the victims of the 9/11 attacks in New York paid tribute to their loved ones during a ceremony at Ground Zero.
It is 11 years ago today that the attacks killed nearly 3,000 people.
More top news
Two students and their climbing instructor are feared dead after an avalanche hit a school party in Japan.
The US has strongly condemned Russia's treatment of protesters after the largest anti-government protests in years swept the country.
Prosecutors in South Korea are seeking a warrant to arrest former president Park Geun-hye on corruption allegations.