Our selection of some of the best news photographs taken around the world this week.

A migrant holding a child is caught between riot police and razor wire near the border train station of Idomeni in northern Greece. Migrants wait there to be allowed to cross the border from Greece into Macedonia.

Experts investigate the Erawan shrine - the site of a deadly bomb blast in central Bangkok, Thailand. At least 20 people died at the Hindu shrine, which is also popular with Thai Buddhists.

Former US President Jimmy Carter announces he is to be treated for cancerous tumours on the brain. Mr Carter, 90, was recently treated for liver cancer, but the disease has spread. "It is in the hands of God and I am prepared for anything that comes," he said.

Hooded left-wing militants prepare to throw Molotov cocktails during a demonstration in the Gazi district of Istanbul, Turkey. Police have used water cannon nightly to disperse protests denouncing the Islamic State group and the Turkish government's policies on Syria.

Honour guards perform during a parade in Seoul, South Korea - throwing their rifles in the air. The parade was part of 70th anniversary celebrations to mark South Korea's liberation from Japanese colonial rule.

Members of a religious group called the White Brotherhood perform a ritual dance at Rila Mountain, Bulgaria. The movement's teachings combine aspects of Christianity and Hinduism - with an emphasis on brotherly love, healthy diets and living in harmony with nature.

Schoolgirls take part in a snake-awareness programme marking the Nag Panchami snake festival in Mumbai, India. The Hindu festival is observed during the monsoon - with prayers and tributes to snakes.

The Hermione passes under the Jacques Chaban-Delmas bridge arriving in the port of Bordeaux, France. The vessel is a replica of a French frigate that took General Lafayette to the US in 1780 to rally rebels battling for independence.

Men in teams of four try to climb to the top of a greased pole - called a panjat pinang - in order to get to prizes tied to the top. They were taking part in celebrations marking Indonesia's 70th anniversary of independence from the Netherlands.

A competitor jumps from the old bridge in Kanal ob Soci, western Slovenia, during a diving competition. It is a 17m (56ft) drop from the bridge to the water below.

Colombian dancers Liliana Macchiabello and Alejandro Triunveri compete in the World Tango Championship in Buenos Aires, Argentina. Hundreds of couples from around the world are taking part in the competition.