World News Update, what you need to know

Thousands of Chileans have returned to their homes after spending the night on the hills, following a powerful 8.2-magnitude earthquake that killed six people and sparked tsunami alerts.

ELSEWHERE:

BRUSSELS - Europe is unhappy with Australia's decision to drop climate change from the G20 agenda and is lobbying the Abbott government to reconsider.

CAIRO - The Arab League has called an emergency meeting of foreign ministers for April 9 on the floundering US-brokered peace talks between Israel and the Palestinian, its chief Nabil al-Arabi has announced.

BRUSSELS - NATO has warned that Russia's military presence on the flashpoint border with Ukraine was of "grave concern" and that Moscow's forces could reach military objectives in just days.

WASHINGTON - The US Supreme Court has removed the overall limit on contributions a donor can make to political candidates, a move that could open the floodgates to campaign funding by rich individuals.

LONDON - The Duke of York has torn up hundreds of years of protocol after he became the first member of the Royal Household to take a selfie in a Palace.