I may say that watching carefully and condemning what is going on in Syria is not enough for the Syrian people at all. I'm very sure that it is not true that the opposition is preventing the humanitarian aid to get into these cities. It is the opposition themselves who are inside those cities, in the very need of the humanitarian aid. The regime, every time, tries to find some way to prevent the convoys from entering the city.
I remember one time in Moadamiyeh, the UN sent a convoy to Moadamiyeh, so the regime said, “Okay, go into the town.” The militias' defence—I don't know their names; they are with the regime and they are armed militias but they are not with the army—stood in front of the convoy, shot at it and forced it to go back. They didn't allow it to enter the town, although we could see the convoy from the entrance of Moadamiyeh. We could see the cars and the buses coming with the aid and we were so happy. We let the kids hold flowers to give to those people who would allow food to enter into their town. We saw also desperately that the convoy was going back and they didn't enter the town.
It is only the regime who is preventing the food and the humanitarian aid from entering those cities. There is no benefit for the opposition to stop that aid from coming into the besieged area.