More than 200 people have been killed by heavy rains and flooding in Pakistan since the start of the monsoon season from July, officials said on Monday, as rescuers scrambled to drain water from inundated cities. Rescuers backed by boats were transporting people from the southern cities of Sukkur and Larkana to dry land as a massive deluge swept through several neighbourhoods after the heaviest rains in seven decades, local official Sheikh Uzair said. Authorities were on high alert to drain rainwater from the southern metropolis of Karachi with a population of more than 20 million amid predict…