The U.S. and its puppets, especially the E.U. and Nato, have been trying to weaken the rebuilding Russian empire as much as possible to contain it, while maintaining the U.S. Global Empire.
This has become a vital, crucial goal because of the rapid growth of Chinese power and the ever closer Alliance of Russia, China, Iran, Iraq, Syria, Central Asia, Pakistan, etc.
The U.S. and E.U. are desperate to stop Russia from rebuilding its vast Central Asian states within the Russian Federation and this new Alliance, especially because of the vast Caspian Sea oil and gas. The E.U. is highly dependent on Russia for gas and on Russia, Iraq, Iran and the pro-Russian Caspian Sea powers, especially Kazakhstan. The Russian move into the Black Sea is another major step in that direction. Kazakhstan publicly supported the Russian move to reunite with the Crimea. Kazakhstan is the great prize, with 30% of its population Russian and a vast border with Mother Russia. Russia is probably not at this time trying to reunite Kazakhstan with Russia, since that would involve many more problems, but simply to keep it as a close ally, as the Ukraine was until the violent overthrow of the Kiev government by the U.S. supported coup.
Russia, Iran, Iraq, and their Central Asian allies are close to a vast oligopoly on the oil and gas exports of the world, especially to the E.U., U.K., China, India, etc.
Saudi Arabia is desperate to break the growing Iran-Iraq-Syria-Hizbollah-Russian-Central Asian power block. Right now it is trying desperately to build its own military forces to offset the U.S. withdrawal from the region, but that is absurd. In the long term, Saudi Arabia will align with Russia-China-Iran-Central Asia or be overthrown from within by those who will become reasonable.
China, now firmly in the Russian-Central Asia-Iran-Iraq block with gas lines from Russia, etc., is moving forcefully into all of the South China Sea to control oil and gas there. The U.S. is desperate to stop that, but China keeps moving out.
All of that puts the dying U.S. Empire on a collision course with the vast Russian-Chinese-Iranian-Central Asian Alliance. Pakistan has become very anti-U.S. because of the U.S. attacks in Pakistan and is allying more and more with China. Even India is working more and more closely with Iran and its allies to get the gas they need. Just yesterday the president of Iran spoke in Afghanistan calling for a great regional entente, working together more and more closely. That is the likely route for Iranian oil and gas to India.
Ultimately, the U.S. Empire must withdraw from its vast over-stretch to save itself financially and economically, politically and militarily.
The E.U. knows that, so Germany’s Prime Minister talks privately with Putin in German and Russian about the American Global Crisis. [She knows Russian and he knows German, so it's easy.] Germany, the E.U. and Russia are moving toward a long run understanding once the crippled U.S. implodes financially or withdraws to save itself. The CEO of Siemens, the giant and vital German technology corporation, has just visited with Putin in Russia and made public statements of strong plans to continue working with Russia very closely. Other German CEO’s have done the same, acting as informal reassurances from the Prime Minister that her public words going along with the U.S. more or less do not mean any kind of break with the close relations with Russia.