Even as Russia massed over 100,000 troops on Ukraines borders in April, Andriy Zagorodnyuk felt sure President Vladimir Putin wouldnt go to war.

The United States's move to label Huawei as a national security threat and block it from billions of dollars in subsidies is its toughest move yet against the Chinese telecom. And with more allies poised to follow suit, Washington's uphill diplomatic campaign to isolate the company is at a turning point - and it's a sign of deepening fissure between the West and China.