The Prospects for China and Russia allying again

China and Russia vs. the United States? (Huiyun Feng) from The Diplomat 
"The future of a China-Russian relationship depends largely on relations these two countries have with the West, especially the United States. If Washington pushes too hard on oil prices, Ukraine, and NATO expansion toward Russia, and if the U.S. rebalances too far against China in the Pacific, China and Russia may indeed move towards a formal alliance, even if that may not have been what they originally wanted."