title: U.S. Commerce chief says expanded North Korean sanctions show China's waning support: CNBC
text: WASHINGTON (Reuters) - Expanded negotiations against North Korea announced on Thursday would  be very  good if they succeed in cutting off imported goods, and showed lessening support from China toward Pyongyang, U.S. Commerce Secretary Wilbur Ross told CNBC in an interview on Friday.  I think that move by the Chinese central bank was important... From the physical point of view of limiting the trade ... But even more importantly, it sent a very powerful message to North Korea that China is not being as supportive of them as it had been,  said Ross, who is scheduled to visit Beijing this weekend. 