China to 'step up' troop deployment in India border row

China warned on Monday that it will step up its troop deployment in a border dispute with India, vowing to defend its sovereignty at "whatever cost".The standoff started more than a month ago after Chinese troops started building a road on a remote plateau, which is disputed by China and Bhutan.Indian troops moved in to the flashpoint zone to halt the work, with China accusing them of violating its territorial sovereignty and calling for their immediate withdrawal.