Soju is made in the most part from fermented rice, but also with other fermentable products like wheat, barley or sweet potatoes; then distilled an adjusted to 20-45% abv. / 40-90 proof. The North Korean brand would initially go on sale in the Eastern US states and should be available now.
Now North Korea is going to enter the playing field with one of their soju going to be sold in the US, Pyongyang Soju. This is quite rare for products from North Korea to be sanctioned for import to the United States. Many folks feel that products from North Korea shouldn't be allowed into the US or should be boycotted.
Personally, I will try one bottle of Pyongyang Soju if I run across it so I can review it, but after that I won't go out of my way. I much prefer the multitude of premium, Japanese distilled products called shochu to Korean soju. They are just so much better in taste and quality than soju. So much so, that they are now the number one alcoholic beverage consumed in Japan.