Russia and China have vetoed in the UN, any intervention from others to remove Assad. They have protected that dictator, an assassin, to protect their own investments, the lucrative sale of weapons, the very weapons used by these mercenaries to kill the civilian population of Syria. And now they want to participate in an investigation that clearly is going to identify their own doing, their sale of their chemical weapons! China and Russia to cover-up their sins!
Yemen's Houthi rebels commit to peace plan in letter to UN chief, BBC reports (Haaretz)
from the article: Moscow to insist Russia, China take part in Syria chemical arms probe