In Syria you can divide the areas into three categories: currently under government control, under non-government control, or under intermittent control. Access is very good in both the government and the non-government areas. It's most difficult in the areas under intermittent control, and every access to that humanitarian space is negotiated day by day and case by case. It's proven most difficult and not always successful.
As for relief coming in from neighbouring countries, that's not an issue. The issue is really to get to these what we call grey areas, the zones under intermittent control.