China and Iran have expressed support for a Russian proposal to resolve Tehran's standoff with Western governments which suspect it of secretly planning to build a nuclear bomb. Top Iranian nuclear negotiator Ali Larijani, on a one-day trip to Beijing to seek China's support, said on Thursday the Russian proposal - that Iran's uranium fuel be enriched on Russian soil rather than in Iran - needed further discussion.Tehran has previously shown little interest in the idea, intended to ensure it does not covertly divert enriched fuel towards a weapons programme. It had repeatedly insisted it has no plans to build bombs but has the right to enrich uranium fuel on its territory for nuclear power generation. "The Russian suggestion is a useful one, but needs to be discussed further," Larijani told a Beijing news conference.