Humanitarian aid transported by Greta Thunberg’s second flotilla won’t even reach Gaza because of a lack of docking facilities and Israel’s “lawful” blockade, a maritime expert has said.

As the Swedish activist’s boats left Barcelona Sunday, Thunberg was joined by figures, including Game of Thrones actor Liam Cunningham and former Barcelona mayor Ada Colau.

The Global Sumud Flotilla, consisting of about 70 boats, is carrying aid including food, water and medicine and hoping to bring this to civilians in the Gaza Strip. 

The flotilla is expected to be joined by more boats before they reach Gaza around Sep. 14 or 15.

Israel said it deported Swedish climate activist Greta Thunberg. (Courtesy)

Professor Kraska emphasized that having Israel’s blockade is a lawful operation during an armed conflict to prevent vessels entering, but it must meet certain requirements, including notice, effectiveness, and impartial enforcement.

“Ultimately, there is authority for Israel to defend the blockade,” Kraska said. “But it’s not just the law — politics and practical realities are involved as well. Both sides are weighing those dimensions.

“Israel, however, maintains that its maritime security operations, which look like a blockade, are a lawful measure of war and will act to prevent ships from docking.

“There is not one controlling narrative: there is international law, the political situation and the tactical dimension,” he added.