I can't believe that the Mossad was involved - think of the logistics: If you were going to assassinate someone in a state that is hostile to you, why the hell would you use passports of people that would trace right back to Israel? It's almost insane to conduct operations in such a manner. If the Mossad did execute this operation, then the head of Mossad should be fired for incompetency, and then shipped off to Briton for his trial...
Stabbing reported in Kiryat Gat in southern Israel (Haaretz)
from the article: Germany, France also request Israeli answers on Dubai fake passports