At present, relations between Moscow and Beijing in the defense and military-technical spheres are experiencing a period of unprecedented cooperation.
The first regimental set of long-range S-400 Triumph anti-aircraft missile systems was delivered to China from Russia, the supplies of which became known in 2014. It includes a command post, radar stations, launchers, and power equipment. China became the first foreign customer of such air defense systems. Deliveries of the S-400 Triumph are especially important for the PRC, as they will allow the Chinese People's Liberation Army to control airspace over all of Taiwan or over the South China Sea.
This new-generation long-range anti-aircraft missile system is designed to defeat all modern and perspective aerospace attack weapons and any other air targets in conditions of intense fire and electronic countermeasures.
It should be noted that these are far from the first deliveries of Russian weapons to China. Russian-Chinese military cooperation has begun to develop rapidly after 2014. In 2012, Russia's share in the Chinese arms market was 43%, then it grew to 64% by 2016. Such interest on the part of the PRC is obvious: Russia still retains serious advantages over China in a number of branches of military production. We are talking about the creation of anti-aircraft defense equipment, some types of radar technology, aircraft engine building and underwater shipbuilding. Russia offers China the most advanced and high-tech systems to date. In December 2016, Beijing began to receive Su-35 fighters. Another important area of bilateral military cooperation remains aviation engine construction. The United Aircraft Corporation signed a contract to supply D-30 and AL-31F engines worth $ 1 billion to the People's Republic of China.
The embargo imposed by the US and the EU on the supply of arms to the People's Republic of China had an unwieldy influence on the development of military cooperation between the two countries. As a result, Russia has taken a leading position among other suppliers of military products in China. As of 2016, the volume of sold military products and services to China exceeded $ 3 billion, while the total portfolio of Chinese orders amounted to about $ 8 billion. Obviously, half of this amount fell on contracts for the Su-35 and S-400, and another one billion dollars were contracts for aircraft engines. Presumably, $ 3 billion accounted for a contract for anti-ship missiles, supplies of spare parts, materials and equipment, as well as numerous research and development works. Thus, the PRC armed forces underwent considerable modernization thanks to Russian-Chinese cooperation.
Washington has nothing left to do but observe the increased Russian-Chinese military cooperation and express all kinds of apprehensions about this. Especially, Washington has fears that Russia and Beijing may call into question the US dominance in the APR and support each other on a wide range of issues from the Syrian crisis to the situation around the DPRK, while not taking into account Washington's opinion on these issues.