How can you say anyone is responsible for retaliatory actions? Governments may have the right to attack enemy soldiers to prevent further bloodshed, but individuals do not.
I don’t believe that one man can be blamed for this so-called retaliation.
Since I’m not a very well educated Jew, are you able to provide evidence that says he is responsible? (talmudic, halachic, rabbinic, scriptural, or otherwise?)