because Israel had to keep the blockade on the Gaza strip- there
were already several times that Israel caught ships and boats with
tons of rockets and other weapons -while those boats were disguised
as something else. Israel offered the flotilla to board at an
Israeli port 20 km from Gaza -where the supply will be checked and
then transferred to Gaza but the flotilla refused for hours, ones
they were about to enter the Territorial water of Gaza, Israel had
to stop them.