
Irandisplayed what it described as adomestically-builtlong-range,mobilesurface-to-airmissilesystemon Thursday,Iranian state media reported.
The announcement comes at a time of rising tension betweenIranand the United States.
Iranshot down a US military surveillance drone in the Gulf with a surface-to-airmissilein June.
It says the drone was over its territory, but the United States says it was in international airspace.
State television showed President Hassan Rouhani attending an unveiling ceremony for the Bavar-373system, whichIranian media have described as a competitor to the Russian S-300missilesystem.
Thesystem's unveiling came onIran's NationalDefenceIndustry Day.
Iranhas developed a large domestic arms industry in the face of international sanctions and embargoes that have barred it from importing many weapons.
Western military analysts sayIranoften exaggerates its weapons capabilities, though concerns about its long-range ballisticmissileprogramme contributed to Washington last year leaving the pact thatIransealed with world powers in 2015 to rein in its nuclear ambitions in exchange for an easing of economic sanctions.