Vice President Biden, as have previous American administration officials, clearly states the problems Israel is generating by approving currently the 1600 new homes to be built in East Jerusalem, given that its a core issue within the Road Map. The announcement "is precisely the kind of step that undermines the trust we need right now and runs counter to the constructive discussions that I've had here in Israel." Not only is this a disservice to the initiative towards peace, but mostly to the voting Israeli public.
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from the article: Biden: East Jerusalem plan undermines peace talks