OK, how about an objective discussion.
On the one hand, you only make a beracha shecholak mechevodo l’basar v’dam with Shem and Malchus on seeing a non-Jewish king who has the power to execute.
On the other hand, the US President – as Commander in Chief – has the power to unilaterally approve the killing of enemy combatants. This President (and most of his predecessors) has exercised that power.
Those are the facts. How about a rational, objective, non-political discussion of the Hallacha?