The biennial International Defence Exhibition (IDEX) in the UAE capital Abu Dhabi is the largest defense conference in the Middle East, with the participation of over 1,300 exhibitors from 65 countries.

But what makes it stand out from other major arms fairs is its participants. Invitees include military officials and manufacturers from countries that aren’t friendly with each other. Delegates from China and the United States, Russia and Ukraine, India and Pakistan, and Israel and Arab states are present at the same event.

Eight Russian arms manufacturing firms were exhibiting at the fair, including Kalashnikov Group and Rosoboronexport. In a statement to CNN, IDEX said it was “proud that this year’s edition is the largest in the event’s 30-year history.”