IDEF 2025, the 17th International Defence Industry Fair, has begun in Istanbul with over 900 Turkish and 400 international defense companies from 44 countries. Major firms like BAE Systems, Lockheed Martin, and Airbus are showcasing advanced land, air, and naval technologies. National pavilions from countries such as China, Saudi Arabia, and Pakistan are on display. The six-day event spans multiple venues and features ministers, military chiefs, and commanders from 103 countries. It is organized by KFA Fairs with support from Turkish defense authorities.