No. Switzerland has not joined the EU since a referendum on the matter was defeated.
Switzerland is not in the EU, so it cannot join the Euro area.
Nope.
Switzerland
Yes
Yes, because Switzerland is not in the EU.
Yes. Switzerland is considered to be part of Western Europe. However, Switzerland is not part of the EU.
It doesn't. Switzerland is not in the EU, so it cannot join the Euro area.
No
Switzerland.
Japan, Switzerland, EU, USA
Switzerland and also Liechtenstein.