"The assassination represents a mortal blow to Hamas and its image". A mortal blow kills the recipient. To think of this assassination as a 'mortal blow' is complete wishful thinking. It is no more a 'mortal blow' than the killing of all the previous 'irreplaceable' Hamas personnel - who - surprise, surprise - have been replaced - as will be Mahmoud al-Mabhouh.
Yemeni pro-government troops retake Shi'ite rebel-held base in south (AP)
from the article: Media failed in Dubai hit, not Mossad