Tens of thousands are due to attend a candlelight vigil in Hong Kong on Thursday to mark China's 1989 crackdown on pro-democracy demonstrators in Beijing, an anniversary given added poignancy by protests that gripped the Chinese-run city last year.
China said it had lodged a complaint with the United States over a U.S. spy plane that flew over parts of the disputed South China Sea in a diplomatic row that has fuelled tension between the world's two largest economies.
Protesters calling for Taiwan not to join the China-led Asian Infrastructure Investment Bank clashed with unidentified men in black T-shirts outside a meeting of officials from the two administrations on a Taiwanese island on Saturday.
Japan launched a trade complaint at the World Trade Organization on Thursday to challenge South Korea's import bans and additional testing requirements for Japanese food after the 2011 Fukushima nuclear disaster.
