kolkata mayor subrata mukherjee on friday said he was keen on establishing sistercity relations between kolkata and karachi his statement follows the karachi mayors interest to strengthen ties between the two traditional port citiesfirst of all the cities are historically closer people of both cities are warm inclined to art and culture and sports these two cities were part of the same cultural heritage mukherjee remarkedthe mayor said he planned to lead an allparty delegation to dhaka on a goodwill mission this yeari will invite the opposition parties in the kmc to join me on the tour he said kolkata already has naples as a sister city and is wooing new jersey