Reuters
Business
 - European bonds and stocks on the defensive before tight Greek vote
 - Greeks deeply divided heading into crucial vote
 - Aetna to buy Humana for $37 billion in largest insurance deal
 - China hunts for 'manipulators' as stocks tumble
 - UBS has whistleblower deal in Brazil currency investigation: paper
 - BP reaches $18.7 billion settlement over deadly 2010 spill
 - Fiat Chrysler CEO says no news on approach to GM but consolidation good
 - Airlines' undisciplined talk may have led to antitrust probe: experts
 - Mixed U.S. jobs report dampens September rate hike bets
 - Heinz completes Kraft purchase, Buffett joins board
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