Israel's Katz said he instructed the military to "take whatever measures necessary" to stop the ship carrying Thunberg and other activists.

Israel’s defense minister has ordered the military to prevent a Gaza-bound aid flotilla carrying Greta Thunberg from reaching its destination, citing national security concerns and a refusal to allow any breach of Israel’s blockade.

The attempt to block the flotilla carrying the famed climate activist comes 15 years after a similar aid effort ended in deadly violence.