Opinion polls suggest that the US presidential election race is tightening as it enters its final week. Both candidates are visiting key battleground states. Hillary Clinton has labeled Donald Trump a bully while he is calling her corrupt. A long-awaited report into South Africa's President Jacob Zuma has found evidence of possible corruption at the top level of government. Thousands have taken to the street demanding that it step down. Iraqi forces have begun to push into residential areas in the fight to retake the city of Mosul from so-called Islamic State. They've entered the city for the first time since it was taken in 2014. And flights investigated in Australia say analyses of the wreckage suggests the Malaysian airlines flight MH370 did not make a controlled landing into the Indian Ocean.