2 room (killing), 2 room (gathering evidence), 2 on the floor/lift (surveillance), 2 lobby (surveillance) == 8 people on the cctv (thanks to dubaisession for them). there are 2 women (one surveilance on the floor (gail), and another one in the lobby during the murder (big hat). probably some two more had to check the carpark and its entry to the hotel. also, they had to consider, that maybe someone was denied entrance at the airport, so some replacement agents were needed, or in case anything went wrong during the plan / the plan had to be changed.
Peru forces rescue 54 adults and children held captive by Shining Path (AP)
from the article: Hamas man's Dubai death was a Mossad-style execution