World News Update, what you need to know

Russian police have wrestled to the ground a woman brandishing the severed head of a child outside a Moscow metro station and charged her with murder.

ELSEWHERE:

ROME - Cardinal George Pell says he has the full backing of the Pope as he prepares to give evidence on the second day of a special hearing of the child abuse royal commission.

WASHINGTON - Donald Trump is blaming a faulty television earpiece for his failure to disavow support from a white supremacist, swatting aside the latest controversy to shadow his unorthodox march toward the Republican presidential nomination.

GENEVA - A senior official from Syria's main opposition group says a fragile international attempt to halt nearly five years of fighting is in danger of total collapse because of attacks by government forces.

BAGHDAD - A suicide bomber has blown himself up at a funeral for the relative of a Shi'ite Muslim militia commander in Iraq's, killing at least 40 people in an attack claimed by Islamic State.

LOS ANGELES - Google has taken "some responsibility" after one of its self-driving cars struck a public bus in a minor crash earlier this month.

LOS ANGELES - A judge has delayed a ruling on Bill Cosby's motion to dismiss a defamation case filed by model Janice Dickinson over her allegations that the comedian drugged and raped her in 1982.

BAGHDAD, Feb 29 Reuters - At least 27 people have been killed after a bomber detonated his explosive vest at a funeral for the relative of a Shi'ite Muslim militia commander in Iraq. (IRAQ BLAST)