If I live abroad and need to file state taxes (rental income), how is this possible with TurboTax as I'm a nonresident and it's forcing me to select a State of Residence?

I'm a nonresident, but I'm not a resident of any other US state. There is no option for Foreign state or possession in the State of Residence list, but it's forcing me to select a US state or specific possession. I'm in Korea, I'm not in any of those. How is it possible to use TurboTax then?