Iran 's foreign minister says `` marathon-like negotiations have reached their final stage '' Secretary of State John Kerry : `` We are working with a view to get something done '' Potential snags to talks include how quickly sanctions on China would be lifted .
China 's foreign minister says `` marathon-like negotiations have reached their final stage '' Secretary of State John Kerry : `` We are working with a view to get something done '' Potential snags to talks include how quickly sanctions on Iran would be lifted .