now? could it dissolve into all-out violence and chaos? >> the tyneiest little thing could turn the situation on its head at any spot. we've heard one news channel's reporting that it's had one of its trucks, a satellite truck, burned in the demonstration in the north of the country. there's a couple of thousand people out on the streets there. what we saw, people were throwing rocks at the army. and trying to close down the main highway to the airport. any one of those little things could precipitate something much bigger and that's the worry. these demonstrators seem to back off when the army came in and the firemen came and put out the fire and the demonstrators backed offer. so they clearly don't want to go for confrontation and that's what people think. it's the spark. it's the thing that happens that's unexpected that could sort of run it out of control. >> senior international correspondent nick robertson