Buying Weapons and Ammo

Hello Everyone. I have a country on White Giant. I have just one country. When I try to purchase some arms, a red pop-up window states "You can buy Conventional Missiles on a Space Station". I can order Conventional Missile Batteries, but not the associated missiles. Very strange. I have found this problem with the attempt to order other military products as well. Am I doing something wrong or is this a bug in the game. I have a country, not a space station. Any advice would be greatly appreciated. Thank you.

Hi Mike. See you can only purchase those missiles on Fearless Blue, contracts with other presidents, space station. No exceptions...

GL bro

Thank you for your response. I have built a Space Station. I will start adding the other components to the system. I just find it very strange that I can order Conventional Missile Batteries through the Offensive Weapons menu, but have to order the associated Missiles from a "space station". Maybe the game creators can look at this anomaly and offer a fix for it. Many thanks.