First I'd nuke that muslim cube thing to show I mean business.
Then I'd threaten to nuke any enemy of Israel that doesn't allow them complete control of the promised land and facilitate the development of a Jewish Utopia where every single Jew in the world can immigrate to and live peacefully without fear. Then once that's done and all the Jews are finally in Israel I'd nuke Israel.
Dump one on Ukraine, then watch the fireworks. Maybe when that's over hit North Korea. If any of the world is left, wait for humanity to pool at a central location to recover and hit that with the last one