The Nato summit last week did not present an inspiring picture of Western unity. The assembled leaders sniggered behind each other's backs and squabbled childishly.
But the official Nato communique did contain one significant new departure. For the first time, it mentioned China, stating that Beijing's growing influence poses challenges that "we need to address together as an alliance". That statement, bland though it is, will be regarded with alarm in Beijing and delight in Washington.
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