Letter to the Editor: Interpreting laws of the game of football

Football does not have rules but instead laws which govern what is allowed on the field of play. Laws are written so as to be interpreted depending on the circumstances pertaining to a particular event.
How peculiar then was it to witness a referee deem that Moussa Sissoko deliberately handled the ball in the Champions League final. What was Sissoko trying to prevent by deliberately handling the ball?