. >> the ball varyian revolution is out to destroy. it's destroying itself because of the result. not because of columbian president. >> the solution, and the economic consequences will continue to be harsh for the people living here, who were used to moving through the borders. >> gunmen in the pakistani city shot dead a technician working for a private tv network, opening fire on a van. the largest broadcaster. it's the latest attack targetting the media >>> for years armed gangs have controlled parts of the water supply in karachi. the so-called water mafia stole a million dollars worth of water, and sold it on the black market. police are finally cracking down on them >>> on the outskirts of the city, within view, is an illegal station. the owners have tapped in underground pipeline owned. all day trucks fill up with stolen water and sell it across karachi. >> translation: we sell for $4, they resell it to the people for $25. >> reporter: the water mafia thrives on the fringes of the city. armed gangs control the neighbourhood. >> reporter: this is one of karachi's illegal wat