A draft proposal for an agreement with Iran includes a 60-day ceasefire extension, a commitment to ending all military operations on every front, including Lebanon, and affirmation from Iran that it won't develop nuclear weapons and will dispose of its enriched uranium stockpile, according to two regional officials with knowledge of the ongoing diplomacy.  Iran has not yet agreed to all the terms, though a senior U.S. official said Sunday that they had agreed in principle to opening the Strait