UNITED NATIONS (Reuters) - As the United States prepares for a presidential election next month, thorny diplomatic issues like an arms trade treaty, the Palestinians' U.N. aspirations and talks on banning weapons of mass destruction in the Middle East have had to wait. For months, U.N. officials and diplomats have complained privately that discussions at the United Nations aimed at resolving a range of problems have been delayed until after the November 6 election in which President Barack Obama, a Democrat, faces off against Republican contender Mitt Romney. ...

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