Palau
Switzerland has not joined in the UN and it is only an observer country. Appart from having 'co-headquarters' of the UN in Geneva Switzerland has been a member of most UN suborganisations (and their mainsponsor!) for a long time. The country has joined the UN in 2002.
as it is advanced country now
Yes, it is. It is a member state of the UN.
Montenegro [2006] Montenegro [2006]
Montenegro
All Arab countries are already part of the UN, but Palestinians are trying to form a country and to gain admission to the UN for that country.
montenegro in 2006
Yes, it is.Israel is a sovereign nation and member of the UN, independent of any other nation.
Yes, each member of the UN is a member of the General Assembly.
The US is a member of the UN. It is not a member of the EU
douglas MacArthur