It seems to me that Dagan is putting himself and his own political aspirations over that of Israel. I believe PM Netanyahu has the best interest of Israel at heart. Iran has to be stopped. If Iran gets the nuke and attempts to wipe Israel off the map as promised it will be too late for Dagan to change his mind or for anyone to tell Dagan we told you so!
6 international peacekeepers injured in Sinai explosion (DPA)
from the article: Former Mossad chief briefed comptroller about Iran strike plans