Activists on board a flotilla of vessels sailing toward Gaza said they were prepared for the Israel navy to intervene as they approached the besieged Palestinian territory on Wednesday after a tense night in the Mediterranean Sea .
The Global Sumud Flotilla, with Greta Thunberg aboard , consists of about 50 boats and 500 activists and is carrying a symbolic amount of aid. It has remained undeterred in its mission to break the Israeli blockade of the coastal strip and reach Palestinians .