title: saudi killing of yemeni people worst type of terrorism ayatollah khamenei
text: th international aerospace exhibition opens in tehran thu oct   pm th international aerospace exhibition tehran  press tv 
  hamid javanipress tv tehran 
  the th edition of irans aviation and aerospace exhibition is underway near the iconic milad tower in the capital tehran iranian and foreign companies active in the aerospace industry have attended the day event to showcase their products as our correspondent hamid javani says iran has made eyecatching progress in civil air services in recent years loading