Yes. The United Nations, as an employer, recognizes the same-sex marriages of its employees.
Yes. Your foreign marriage is legal in the United States.
Does_the_united_states_government_recognize_an_american_citizens_marriage_when_the_marriage_took_place_in_Mexico
No. No Arab nations recognize the sovereignty of the state of Israel.
Other countries do not recognize it as a legitimate nation.
The United States will recognize a legal marriage performed in any other country.
Yes. The United States was one of the first nations to recognize the independence of the Republic of Kosovo.
Other countries do not recognize it as a legitimate nation.
Israel is formally recognized by, and has mutual diplomatic relations with, all but about 30 of the United Nations member nations.
If the marriage was conducted legally in the other country, the US will recognize the marriage is valid.
United nations
No. Southern states cannot refuse to recognize interracial marriage. It has been legal in all the United States since the 1967 Supreme Court decision that deemed anti-miscegenation laws unconstitutional. See related link.
If you are both United States citizens it is not illegal, wherever you are married.