But would you have considered it a correct, legitimate military action if a British ship was sunk when heading away from the Islands?
Yes - i am afraid so.
I dont care which direction the ship was heading. It might have been following a race track pattern, for all we know waiting for the carriers to be located, and this is a crucial point, IT CAN CHANGE DIRECTION!
The ship could have swung north west, raced over the Burwood bank ( which would have meant the submarine would have had difficulty in tracking them) and attacked the British Task force. This would have causdght the task force i npincer between the Belgrano group and the Argentian ciricraft carrier group
The Belgrano was armed with 15 x 6" guns. Her two escorts were armed with Exocet. They could have fired both weapons from miles away and inflicted death and damage on the ships of the task force.
Further, during war, under international law, the heading and location of a belligerent naval vessel has no bearing on its status. In addition, the captain of the Belgrano, Héctor Bonzo, has testified that the attack was legitimate as did the Argentine government in 1994.
As i said, the right choice was made. If it were my call i would make the same call in seconds.
(and much as i HATE Thatcher with a passion, she was right about the Falklands Islands.)