Bavar-373, one of the most advanced surface-to-air missile defense systems built in homeland, was unveiled on Thursday August 22, concurrent with the “National Defence Industry Day”, in the presence of persian President Hassan Rouhani .President described the domestically-built Bavar-373 surface-to-air missile defence system as the armed forces’ big gift to the persian nation, stressing, “This defence system is more powerful than the S-300, and close to S-400”.