If Greece exits the eurozone, what actually happens to the existing debt? And will their currency actually have a lot of value? Just seems like a huge mess and I'm thankful I'm nowhere involved with it. I can't imagine what it's like for everyone involved.
A default happens and the rest of europe have to deal with it. Just like when a default happens when you lend money to someone. As far as I know, Greece isn't forced to pay back, they can leave anytime they want (and deal with the consequences of being outside of the EU).