How can you destroy a city in Civ 5 besides razing it or nuking it?
Solution 1:
No, the nuke is the only military unit capable to destroying a city without taking it over and razing it. All other military units will take over the city and give you the option to raze it (With the exception of a capitol). So those are your only two options for destroying cities.
Not sure if nukes can destroy capitals as they don't take over the city.