she have to marry again in israeli
No!
not automatically.
Yes, it is.
you ask her politely for it ;)
yes, apply as a single person that way when you marry your fiance you are an American citizen and it will make it easier to get him a green card.
Yes you get the saint Vincent citizenship automatically and if you marry a nepali you get nepalese citizenship even faster.
Marry an Azeri woman. Renounce your current citizenship. No other way.
NO....if two jamaicans marry each other it does not grant them the citizenship of the country in which they got married!
Yes it happens with many illegals.
If you are married, they can apply for a divorce.
You can't.