None. It is not a matter of picking sides. Although killing him will empower terrorists in the region and will result in deterioration of US influence in ME and beyond.
Let me simplify it. Obama and team Democrat was paying billions to both Shia and a Sunni operatives. Trump is not paying. Iran’s Shia Control Iraq, and have been involved in terror in Syria and other places. They unwisely thought they could attack US interests to get Trump to rethink paying them. Trump showed them we don’t pay terrorists, we kill them.
“Although killing him will empower terrorists in the region and will result in deterioration of US influence in ME and beyond.”
Judging by the attack on our embassy, I’d say the terrorists were quite ‘empowered’, and this empowering was from their now-dead leader.
As far as influence goes, we were losing well before taking out this bastard, as Iraq was going Shiite and wanted us less and less...and much (maybe most) of this deterioration was due to the guy we just nabbed.