Engdahl, in my opinion, is one of the most astute political observers in the world. Not that I always think he is right, but his observations and analyzes should never be ignored.
...there are clear signs of late that both Beijing and Moscow are moving decisively after long hesitation to strengthen strategic economic cooperation in the face of the obvious disintegration of America as the sole Superpower. If the recent trend is deepened it will create Washington’s worst geopolitical nightmare: a unified Eurasia landmass capable of challenging America’s global economic hegemony.