No, most countries allow you to purchase a citizen and depending on your ancestry or knowledge of several country constitutions you could just walk in and deman

No, most countries allow you to purchase a citizen and depending on your ancestry or knowledge of several country constitutions you could just walk in and demand citizenship. St. Kitts & Nevis, accepted over 100 places, fairly powerful, purchase price at about 100k. Real estate can be a trust where you have partial ownership of a parcel which value is in excess of any amount needed to prove financial interest. Antigua and Barbuda, same 100k gets you papers and a passport in a week with 150+ countries. Price doubles for St. Lucia, but you're talking about 150 countries of visa free for 200k. UN passports actually are highly suspicious, simply because of the diplomatic ties it contains - and bad image you can present the country in. You're there to highlight a political event, not to take leisure or secure travel. Very different circumstances.