Flag carrier El Al Israel Airlines said on Thursday it would not be able to maintain a full flight schedule to Dubai from Sunday due to disagreements over security arrangements in Dubai. Tens of thousands of Israelis who had already purchased tickets will not be able to fly, it said. El Al and two local rivals called on the Israeli government to intervene. One option, they said in a letter made public, was to secure from Dubai authorities “an additional allocation of security tags, to an extent that will allow the Israeli companies to handle the entire planned flight schedule.” The other was t…