Hong Kong police arrest four over social media postsChinese dissident artist Ai Weiwei protests possible extradition of Julian Assange in London'No realistic possibility' foreign agency will reveal if spy system used for warHundreds of firefighters battle Western Australia wildfire‘Easter is a time to remember . . . to remember, amid all the distractions of life’ACT leader David Seymour expects Waitangi events will be 'tense'Hong Kong man jailed 21 months for throwing eggsVideo shows chaos at aid delivery on Gaza beachTraffic updates: Easter weekend set to beginBetter funding could prevent more drownings