The current Sino-Russian relationship has improved over the last ten years, especially since Russian estrangement with the U.S. and western European nations over its invasion of Ukraine in 2014. However, the current relationship between Russia and China is more complex than a on sentence excerpt from Dan Coats testimony to the U.S. Senate would lead one to believe. Political scientists Paul Stronski and Nicole Ng contend that there is a lingering mistrust between the two countries that moderates the relationship, resulting in a more complex strategic relationship than may appear on the surface. Russian foreign policy expert Bobo Lo takes it further by saying not only is there no Sino-Russian alliance, but even the official claim that they are strategic partners is open to question. The Sino-Russian strategic relationship includes both converging and competing political, economic, and military factors that have pulled Beijing and Moscow increasingly closer together on one hand but have also caused them to hedge again stone-another, creating potential for friction.