He wants it amended so arms can be sent to "moderate" forces in the opposition.
However, several EU states are totally opposed to ending the arms embargo.
Earlier, Syria`s foreign minister confirmed the government would "in principle" attend an international peace conference which the US and Russia hope will take place in Geneva next month.
Walid Muallem said it would be "a good opportunity for a political solution" to the conflict, which the UN says has left more than 80,000 people dead.
Members of the main opposition coalition are currently discussing whether to attend the conference, but spokesmen have said they would if President Bashar al-Assad agreed to step down.