A suicide bomber killed 25 people and wounded more than 50 in Baghdad when he detonated his explosives inside a busy cafe, police and medical sources told Reuters.
The attack took place in a northern area of the capital near a park popular with families.
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The beleaguered Labour Party leader is clinging onto power in the face of as many as 150 MPs voting to remove him from the top job today.
Mr Osborne said he is "not the person to provide the unity my party needs".
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