European banks are required to return approximately 500 billion euros to the ECB on June 28th, in what is being hailed as one of the largest payments in recent history. Many experts believe that this obligation will be difficult for some banks to meet, particularly those in countries with a history of financial instability. One potential solution is for banks to issue debt securities, but this may come with a high risk premium. The ECB may ultimately need to launch another anti-crisis mechanism to assist banks that are struggling to meet their debt payment obligations.