Then why did they need to enter on forged European passports? That would have been unusual -- if they were part of his entourage then it would have been unusual that they didn't have Israeli passports. Also, if Israeli spies can enter Dubai on forged European passports -- which presumably they can -- then why would they do so and carry out an assassination right at the time when the Israeli Minister was visiting very publicly? I suspect there is more to this story -- possibly the involvement of another Arab nation or even Hamas itself, using the public cover of the Israeli visit.
Syrian group says Nusra abducts its leader, in blow to U.S. plan (Reuters)
from the article: Dubai not ruling out Mossad hand in murder of Hamas official