Personally I don't mind if Israel kills Al-Mabhouh, however, if they do that, they can't be allowed to get away with abusing British passports, because that puts genuine holders of British passports at risk and under suspicion. So in this case, if this is Mossad, we need sanctions against Israel and trial of the guilty. I imagine Dubai feels pretty much the same. If Israel wants to kill Al-Mabhouh, fair enough, but not on their territory. That's the last time an Israeli minister will be invited there for a long time.
Report: Palestinian, 18, killed in clashes with IDF in West Bank (Haaretz)
from the article: Ireland confirms 'Irish' Dubai killers don't exist