Israel’s government has vowed to prevent an aid boat carrying Greta Thunberg and other activists from reaching the Gaza Strip.

Israel has ordered the military to block an aid boat headed for Gaza with 12 activists on board, including Swedish campaigner Greta Thunberg. "I have instructed the military to prevent the Madleen flotilla from reaching Gaza," Israel Katz said in a statement from his office.

Israel’s defence minister has said he will stop an aid boat carrying Greta Thunberg to Gaza by “any means necessary” as fears grow the vessel could be attacked.