Israel’s U.S.-backed Arrow-3 ballistic missile shield has passed a series of live interception tests over Alaska, Prime Minister Benjamin Netanyahu said on Sunday, casting the achievement as a warning to Iran.

Jointly manufactured by U.S. firm Boeing Co <BA.N>, Arrow-3 is billed as capable of shooting down incoming missiles in space, an altitude that would destroy any non-conventional warheads safely. It passed its first full interception test over the Mediterranean Sea in 2015 and was deployed in Israel in 2017.

“The performance was perfect – every hit a bull’s eye,” Netanyahu, who doubles as defence minister, said in a statement announcing the three secret tests.

Israel views the Arrow-3 as a bullwark against the ballistic missiles fielded by Iran and Syria.

Iran has been locked in a spiraling confrontation with the United States over its nuclear program and missile projects.

Washington said last week that Iran appeared to have tested a medium-range ballistic missile that flew about 1,000 km (620 miles). Tehran said such tests were for defensive needs.

Read more HERE