Mahmoud al-Madbouh, the Hamas commander, certainly had blood on his hands; in fact, the blood spilled over. As an enemy of Israel he was a legitimate target of Mossad, the Israeli Secret Service. He met his fate in a hotel room in Dubai, perpetrators unknown. Many fingers point to Israel, however, Israel's official policy in these matters is never to confirm and always to deny, but if not the Israelis, then who?
After the massacre of Jewish athletes at the 1972 Olympics, Israel vowed that the killers of Jews would not go untouched. That point was captured in Spielberg's film, "Munich". Golda Meir, then Prime Minister of Israel, was unequivocal in her instructions to track down the murderers and exact justice. After 9/11 this country was similarly unequivocal in our pursuit of justice..
It is the nature of war that enemies must be killed. The professional manner how this was done to the Hamas commander is worthy of examination. There was no explosion, no pistol shots, certainly no collateral damage. The action of the Mossad agents (if they were Mossad agents) was clean, quick, thoroughly professional - and successful.
On a vastly larger scale this country is doing the same thing in Afghanistan, assassinating its enemies. Instead of a hotel room, American forces work in the huge countryside of a country that harbors the Taliban and Al Qaeda terrorists. Instead of secret agents, we use drones and special forces. With all of our technology we can still learn from the Israelis (if they were Israelis).
Despite the difference in scale and method. the principle remains the same: enemies must be encountered and defeated. Also the same, memory must remain long as we recall and avenge the vicious attack on 9/11.