Who would use an 11 man squad? One has to look at history, it is no secret: A 4 or 5 person (maximum) squad is the Mossad norm (New Zealand, Lillehammer etc. are well documented), with probably an additional one on the outside or at a safe house. Here there were 11 ... plus probably one or two more outside. For the Mossad I think the risks were too high for that many people. This is something else, far bigger and even a possibly a joint operation by a number of agencies/countries. The other possibility that would fit is that of a Russian mafia weapons deal gone wrong - Result: Deadly response! Either way .... these people were professional and will not be recognized that easily once they have removed their "facial modifications".
UN: Gaza could be 'uninhabitable' by 2020 if trends continue (AP)
from the article: Hamas man's Dubai death was a Mossad-style execution