Which of the following is the main reason for the emergency meeting in Brussels?

European leaders have reached agreement at an emergency meeting in Brussels on a new bailout for Greece in an effort to prevent the eurozone debt crisis from spreading. The European Union President Herman van Rompuy said the programme would be financed by the EU. the IMF and the private sector. He insisted that Europe would defend its currency.
    "Today, ladies and gentlemen, with all these decisions we have shown that we will not waver in the defence of our monetary union and our common currency. Final remark: when European leaders say that we will do everything what is required to save the eurozone, it is very simple. We mean it. "
    The package is reported to be worth more than $ 200bn. Interest rates for loans to Greece are to be reduced and their duration will be extended. Mr van Rompuy said private sector involvement in emergency measures would be restricted to Greece.