UN Inspectors attacked. Government or Rebels to blame?

The blog of Brendan Spaar does not usually deal with stories of mass genocide but this one cannot be ignored. It seems that the government of Syria may be running wild and violating international law. The Syrian government has allowed U.N. inspectors into the country to verify claims that it used chemical weapons on its own people. To make matters worse, the U.N. inspectors were fired upon in Damascus by snipers while they were in route to inspect the sites. Were the attacks carried out by the Syrian government or by rebels wanting all foreigners out of the territory?

Source: http://online.wsj.com/article/SB10001424127887323407104579036173795495190.html