Pakistan’s eastern Punjab province was dealing with the biggest flood in its history, a senior official said on Sunday, as river water levels rose to all-time highs. More than 1,400 villages were flooded after three large rivers – the Sutlej, Chenab and Ravi – overflowed their banks because of heavy rain and the release of water from overfilled dams in neighbouring India. Pakistan is one of the most vulnerable countries in the world to the climate crisis, despite producing less than 0.1% of global greenhouse gas emissions