2025-03-262025-03-2601/30/20152017-03-28https://pyxida.aueb.gr/handle/123456789/6532This thesis is divided to 4 chapters. Chapter 1 describes the creditor moral hazard during EMU crisis. Chapter 2 discusses the linkages between the transmission of monetary policy and sovereign bond spreads. Chapter 3 discusses the Tobin Taxation over financial transactions. Chapter 4 approaches the systemic risk and financial market contagion under the context of bank and sovereign credit markets.434p.CC BY: Attribution alone 4.0https://creativecommons.org/licenses/by/4.0/Monetary policyFinancial crisisEurozoneBanksText