Military parades in Tehran and around the country commemorate the 35th anniversary of the start of the Iran-Iraq war and offer the West a glimpse of the country's growing number of made-in-Iran weapons.
A United Nations ban on arms sales to Iran will be peeled back over time as Tehran verifiably complies with the terms of the nuclear deal completed in July, but it will be forced to make most of its own for as much as another five years.
The military hardware on display during Sacred Defense Week might include new long-range and mid-range missile defense systems and an Iran-made military drone. Called Karrar-4, the drone is designed for anti-aircraft operations.
The week starts with a ceremony at the mausoleum of the founder of the Islamic Republic, Imam Khomeini, and a speech by Iranian President Hassan Rouhani.
The move to home-made hardware picked up speed after the United States-led sanctions began to bite. Investment and finance remain limited. Iranian domestic aviation remains in its infancy. Aviation projects are reported to rely on sharing technology with other countries, such as Ukraine and Russia.
Date written/update: 2015-08-21