Since its accession almost ten years ago, Beijing has pursued mercantilist policies many of them violative of its trade promises to force manufacturing to move to China.

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When they were allies of the BJP-led NDA government, Ms Banerjee's Trinamul Congress, AIADMK and Samata Party - all regional parties - pressured the centre to dismiss governments in West Bengal, Tamil Nadu and Bihar, clearly violative of the federal spirit.

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