Cyprus' bailout deal is the fifth agreed on so far in the group of 17 European Union countries that use the Euro, since the debt crisis began in late 2009.
In late 2009, Greece's government admitted that public debt was far higher than official statistics showed. That led it to accept a bailout package of 110 billion euros in May 2010. When the economy kept weakening, a second bailout was confirmed in February 2012 for another 130 billion euros.
Ireland's banks suffered from their exposure to the U.S. mortgage market meltdown as well as to a collapse in the local housing sector. The government stepped in to guarantee creditors and deposits, but as it rescued its banks, the costs grew.
Soon Ireland's borrowing rates on bond markets rose so high it was unable to finance itself independently. It secured a 67.5 billion euro package in November 2010.
After Ireland's rescue, investors focused on Portugal, the next weakest country in the currency bloc. Their economy was weak and public finances shaky. The government's borrowing rates in bond markets kept rising on fears it finances would become unsustainable.