GENEVA (AFP) - EU negotiators offered to send a mission to help Iran obtain a nuclear light-water research reactor, in what would be the first concrete move towards rewarding Tehran for abandoning uranium enrichment, diplomats said as four days of EU-Iranian talks ended. AFP Photo Reuters Slideshow: Iran Nuclear Issues Iran's reaction was not immediately known in talks that have been deadlocked since beginning in December. The trio of Britain, France and Germany, representing the European Union (news - web sites), is trying to convince Iran to dismantle an enrichment program that the United States says is part of secret...