The concert in Sarajevo was held with 11,541 empty seats - the number of those killed in the lengthy siege of the city by Serbian forces.
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The president of the world athletics body had faced repeated questions about a conflict of interests over the bid for the Eugene 2021 games.
Temperatures begin to slip away as the weekend approaches
George Osborne has managed to get what he wanted - less generous welfare payments and a clear incentive to encourage people back into work.