Right now there are 26 people listed as suspects; passports from half a dozen countries; and tales of trips all over the world. It only took one person to kill Mahmoud al-Mabhouh and he or she isn't any of the people in this article and isn't listed anywhere else. All these people will be cleared as all they did was stay in a hotel or fly in and out of Dubai. Meanwhile the assassin went in did the job and came out, and nobody is looking for him or her. Whether Israel was involved or not we'll probably never know, but we do know that there's a whole lot of empty speculation right now.
Islamic State militants blow up ancient Arch of Triumph in Palmyra (Reuters)
from the article: Haaretz probe: Dubai assassins' passport photos were doctored