'NATO needs Afghanistan as launch pad for regime changes'

Hundreds of people have demonstrated in a southern Afghan town, accusing NATO troops of killing 4 children during a gunfight with insurgents. It's one of the episodes in a major setback in the relations between the US and Afghanistan in the past months - and comes as President Obama arrives on an unannounced trip to cement the countries' future relations. For more all this, RT talks to politica ...