Green Flag Ventures

Green Flag Ventures Green Flag Ventures is a $20M US-based fund specifically backing Ukrainian dual-use and defense AI startups, founded by Justin Zeefe with an on-the-ground presence in Ukraine. Ticket sizes range from $100K to $1.2M, targeting 18 to 25 companies total across the fund's life. The portfolio reads like a catalog of emerging defense technology: Himera (tactical communications), Karadag (UAV countermeasures), Swarmer (AI drone swarms), Teletactica, Falcons, and Astra Nav (navigatio