President Donald Trump on Friday renewed US security guarantees to Japan concerning islands in the East China Sea with which it has a territorial dispute with Beijing.

At least 13 people were injured Friday evening in a fire on a metro train in Hong Kong, police said.

Desperate efforts are underway to save dozens of pilot whales still alive after hundreds stranded themselves on a New Zealand beach, in the third largest mass stranding in the country's history.

Two US defense officials told CNN that there was an "unsafe" close encounter between a US Navy P-3 Orion aircraft and a Chinese surveillance aircraft Wednesday.

US President Donald Trump and his Chinese counterpart Xi Jinping spoke by phone Thursday evening, the first conversation between the two since Trump took office.