TODAY | May 03, 2013
>> u.s. weighs whether or not to arm the syrian opposition, nbc's chief foreign correspondent richard engel has spoken exclusively with a leader of the rebel forces about the syrian's use of chemical weapons in the ongoing conflict. richard, good morning.
>> reporter: good morning, tamron. short while ago we spoke with brigadier general salim adris, the man the united states is considering arming and new weapons used by the syrian government.
>> they used chemical weapons at least four times against four times.
>> what kind of weapons?
>> it was some kind of gas and it is the sarin gas .
>> you think it was sarin gas ?
>> and how were these used, dropped from planes, missiles?
>> they three times dropped from planes and one time.
>> reporter: the alleged took place in homs, near aleppo, outside damascus and in saraqeb. as for evidence we saw nothing definitive. rebels posted videos online showing what they claim are victims and witness and doctor's accounts but adris has passed a foreign intelligence agency with soil and blood samples and more.
>> we have a bomb which not explode and this bomb was given to be tested.
>> reporter: president obama has talked about red lines .
>> do you think bashar al assad has crossed a red line ?
>> not just for one time, many, many times he crossed the red line .
>> reporter: what do you hope the united states does?
>> i like them to help us to have no fly zone for the whole time.
>> reporter: adris said the united states should help establish a no fly zone to strengthen what he calls the moderate opposition.
>> thank you.