When Iran attacked Israel on Saturday, it pulled Israel out of the isolation it was sinking into due to its war with Hamas.
Conference participants cheered and clapped when the announcement was made and renewed celebration when it was reported that Yemeni and Iraqi factions may have also joined in the attack.
At the direction of President Biden, Austin said US forces intercepted dozens of missiles and UAVs en route to Israel launched from Iran, Iraq, Syria, and Yemen.
Hagari added that zero of the close to 200 drones and zero of the 30 cruise missiles got through to Israeli territory at all.
Seven-year-old girl from Bedouin village seriously wounded in Iranian attack. • US, Israel, UK, Jordan intercept Iranian projectiles
Iran's vowed punishment of Israel might manifest either through proxies or direct means, including ballistic missiles and drones.
In the event of an all-out war, the damage Israel will cause to those countries that attack it is tens of times greater than their ability to harm Israel.
Months of Houthi attacks in the Red Sea have disrupted global shipping, forcing firms to re-route to longer and more expensive journeys around Southern Africa.
It flew about 600 km (372 miles) before falling into sea, South Korea said, while Japan's defense ministry estimated it covered a distance of 650 km (400 miles).