US President Donald Trump has said the July 16 meeting with his Russian counterpart Vladimir Putin in Helsinki could be the easiest stop on his European tour, during which he will also meet America's historic allies.

At least 14 people, including a political leader, were killed when a suicide bomber blew himself up late on Tuesday in Peshawar in Pakistan, police said.

One person has died and at least 20 others sustained injuries when a plane crashed near Wonderboom Airport in Pretoria, South Africa, officials said.

All the 12 boys and their football coach have been rescued from a flooded cave in northern Thailand after being trapped for 18 days, bringing an end to the ordeal that prompted a huge international rescue effort.

An eleventh person was rescued on Tuesday from a flooded Thai cave complex where 12 boys and their soccer coach were trapped for more than two weeks, raising hopes all 13 would be out by the end of the day.

Park rangers in Australia's Northern Territory (NT) have caught one of the region's biggest crocodiles after a decade-long hunt.

After seven years of house arrest, Liu Xia, the widow of activist and Nobel Peace Prize laureate Liu Xiaobo, on Tuesday left for Germany.

At least 141 people are now known to have died in floods and landslides triggered by torrential rain in western Japan as rescuers are digging through mud and rubble in a race to find survivors, with dozens missing.