'I have been warning Pakistan," announced Palaniappan Chidambaram, the Indian minister of home affairs, this month, "not to play games with us. If terrorists from Pakistan try to carry out any attacks in India, they will not only be defeated, but will be retaliated against very strongly." In the spectacular attacks in Mumbai a year ago tomorrow, 10 terrorists despatched by Lashkar-e-Taiba, an extremist Muslim organisation based in Pakistan, killed at least 173 people, including five British nationals. Ahead of the anniversary of the atrocities, Mr Chidambaram's words have been understood – both in New Delhi and Islamabad – to...