Respected Swedish professor in International Law, Ove Bring:
- If the reports are correct, this is against international law and is illegal.
- In times of peace, no country has the right to board ships on international waters nor the right to redirect them or arrest the passengers.
- If the ships were in Israeli territory, the IDF would have been allowed to stop them, send them away, escort them to a port or even searched them for weapons. Even then, they would have to be careful of military actions.
- However, if there had been a real war [which this conflict isn't classified as], Israel would have had the right to block ships heading towards Gaza, even in international waters.