"What Israeli foreign minister Abba Eban said about blockades during the 1967 war:
"To blockade, after all, is to attempt strangulation--and sovereign states are entitled not to have their State strangled. The blockade is by definition an act of war, imposed and enforced through violence. Never in history have a blockade and peace existed side by side."
From "The Israel/Arab Reader" Second ed. Ed. Walter Laqueur (1971ed.) pp. 219. (thanks Joshua)
PS Joshua mistakenly identified him as "prime minister".