World News Update, what you need to know

The decision by a US grand jury about whether a white police officer should be indicted in the killing of an unarmed black teenager Michael Brown is expected to be announced within hours, according to American TV networks

ELSEWHERE:

ANTANANARIVO - Madagascar is trying to contain an outbreak of plague - similar to the Black Death that swept medieval Europe - that has killed 47 people and is spreading to the capital Antananarivo.

TEHRAN - Iran's President Hassan Rouhani says a nuclear deal with world powers would be done despite a missed deadline in Vienna that prompted a seven-month extension in talks.

LONDON - Britain faces its greatest-ever threat from terrorism, the home secretary says, announcing measures to control suspects, strengthen online scrutiny and prevent insurance companies from paying terrorist ransoms.

WASHINGTON - US Defence Secretary Chuck Hagel has announced his resignation as President Barack Obama's White House faces mounting criticism over perceived fumbling in its global security strategy.

ISTANBUL - Turkish President Recep Tayyip Erdogan has been accused of blatant sexism after declaring that women are not equal to men and claiming feminists in Turkey reject the idea of motherhood.

LONDON - A self-confessed paedophile will out himself in a British television documentary to ask for more help for people sexually attracted to children.

ROME - Italian Prime Minister Matteo Renzi has celebrated his centre-left Democratic Party's victory in two regional elections, despite a record low turnout as disenchanted voters stayed away from the polls.