China on Thursday threw a roadblock in the path of a U.S.-led push for sanctions against Iran, saying that it is important to continue negotiations as long as Iran appears willing to consider a deal to give up some of its enriched uranium. "To talk about sanctions at the moment will complicate the situation and might stand in the way of finding a diplomatic solution," Chinese Foreign Minister Yang Jiechi said at a conference in Paris. After months of spurning the proposed deal, which would provide Iran with fuel for a medical reactor, Iranian President Mahmoud Ahmadinejad showed a suddenly...