Organizers say climate campaigner Greta Thunberg and other activists set sail Sunday for Gaza on a ship aimed at "breaking Israel's siege" of the territory.

Climate activist Greta Thunberg and actor Liam Cunningham have joined an international group of human rights activists on a dangerous journey. The mission aims to peacefully break the Israeli blockade of the Gaza Strip while drawing attention to the region's dire humanitarian crisis.

Greta Thunberg, along with a group of climate activists including French MP Rima Hassan and Game of Thrones actor Liam Cunningham, is sailing to Gaza on the ‘Madleen’, a boat operated by the Freedom Flotilla Coalition.