NEW YORK June 21 (Reuters) - Although the sovereign debt crisis has revealed weaknesses, the risk of a break-up of the euro zone is low over the short term, Fitch Ratings said on Monday.

However, apparent weaknesses in the area's economic policy framework and institutions must be addressed if the euro zone economy is to be successful and if confidence in the sustainability of the euro zone is to be established beyond doubt, Fitch analysts wrote in a report. (Reporting by John Parry and Pam Niimi; Editing by James Dalgleish)