Investors participating in a deal to slash Greece's massive debt would face an overall loss on their bond holdings of more than 70 percent, a person involved in with the negotiations said early Tuesday. European leaders at a summit in Brussels said a final debt deal could be signed off in the coming days, together with a second multibillion-euro bailout package designed to save the country from a potentially disastrous bankruptcy. Athens and representatives of investors holding Greek government bonds over the weekend came close to a final agreement designed to bring Greece's debt down to a more manageable level. ... (full story)