Arming the Syrian opposition from the perspective of international law

More than five years have passed since the beginning of the Syrian crisis. Financial and logistical support of regional and trans-regional countries have played specific role in prolongation of this crisis. Whereas, this action not only violates the principle of non-use of force, but arming the Syrian opposition are not the acceptable reasons in international stage under the pretext of humanitarian intervention and counter intervention. In addition, according to election which is done in 2014 and choosing Bashar al-Assad as a president of Syria, arming the Syrian rebel is also illegal under the principle of self-determination .So based on a speech in an article ahead , which is fundamental and strategic research , tried to by employing the descriptive method and while expressing justifications that is dedicated to lethal, non – lethal assistance and funding to Syrian oppositions, reasonable answer be provided by using the principle of international law.