Israel’s enemies are arming themselves with precision-guided heavy rockets and will inevitably come to possess GPS-guided ballistic missiles, an architect of the Israeli missile defense program warned on Wednesday.

Speaking at a conference called Missile Defense: Asset or Liablity for Regional and International Stability, held at the Institute for National Security Studies (INSS) in Tel Aviv, Dr. Uzi Rubin warned that the growing threat is strategic, not merely tactical.

Rubin, who founded and directed the Defense Ministry’s Israel Missile Defense Organization, and ran the Arrow program, said that “Iran possess over 400 ballistic missiles that can reach Israel, with warheads of 750 kilograms. Syria possesses 200 to 300” such missiles, having used up part of its arsenal in its civil war, he added.