After a few days of relative peace, Bengal Chief Minister Mamata Banerjee and Governor Jagdeep Dhankhar have returned to sniping at each other, with the WhatsApp snooping row and Israeli cybersecurity firm NSO at the centre of their latest fight. On Saturday Ms Banerjee alleged "spying" by the central government and said she had evidence her phone had been tapped. The next day Mr Dhankhar hit back with equally explosive claims, saying "many politicians and businessmen have said their privacy is compromised here".