A total of 13 European banks have been asked to strengthen their finances after a broad review of their books.

Here is a look at which banks they are, what country they are based in, and by how much they must increase their capital buffers.

Country Bank Required increase to financial buffers
Austria Oesterreichische Volksbanken-AG 860 million euros ($1.08 billion)
Belgium Dexia NV 340 million euros ($430 million)
Cyprus Hellenic Bank Public Company Ltd 180 million euros ($228 million)
Greece Eurobank Ergasias 1.76 billion euros ($2.2 billion)
Greece National Bank of Greece 930 million euros ($1.18 billion)
Ireland Permanent TSB PLC 850 million euros ($1.08 billion)
Italy Banca Monte dei Paschi di Siena SpA 2.11 billion euros ($2.67 billion)
Italy Banca Carige SpA 810 million euros ($1.03 billion)
Italy Banca Popolare di Milano 170 million euros ($215 million)
Italy Banca Popolare di Vicenza 220 million euros ($279 million)
Portugal Banco Comercial Portugues 1.15 billion euros ($1.46 billion)
Slovenia Nova Kreditna Banka Maribor 30 million euros ($38 million)
Slovenia Nova Ljubljanska Banka 30 million euros ($38 million)

Source: European Central Bank, European Banking Authority