it's mostly pain relievers. >> pain. >> reporter: the iranian red crescent tells us they've not been able to make any shipments to yemen since late march but officials want to resume deliveries a as fast as possible. iran maintains any aid to yemen is purely humanitarian. this shipment was supposed to go out today but with the fighting going on in yemen it's unclear when or if it will reach its destination. while iran and world powers continue to negotiate towards a final nuclear agreement, in other matters like the yemen conflict tensions between tehran and washington continue to grow. >> let's bring in fred joining us live from tehran in iran right now. fred over the week as you know the ayatollah said this. he said the threat to the region in his words is, quote, america itself with its unrestrained destabilizing interventions and said the other side was, quote