ex-extrordinary amount of unacceptable rhetoric from the north korean government in the last days. let me be perfectly clear here today. the united states will defend and protect ourselves and our treaty ally, the republic of korea. bill: so that from secretary kerry. greg palkot leading our coverage in london. what is the latest now, headlines from north korea today, greg? >>reporter: hey, bill, hey, martha. an industrial park. we have been around the site. not much to see but in fact one of the few symbols of cooperation between the north and the south. factory complex is inside north korea, near the border town of que song. the companies employ 50,000 north korean workers along with 900 south korean managers that is who north korea is banning coming into the factory complex. some managers remained