NEW : 83 killed in fighting Friday , rebel group says . The brutal civil war claimed more than 6,000 lives in March alone -- making it the deadliest month since the conflict began , the opposition Syrian Observatory for Human Rights reported this week . Bashar al-Assad blames `` foreign powers '' for civil war . Embattled president says he will not give up . Comment:
NEW : 83 killed in fighting Friday , rebel group says . Bashar al-Assad blames `` foreign powers '' for civil war . Embattled president says he will not give up . Comment: