I mean the other day I was checking out CMake licensing(because I was bored), and I was shocked to find that you can’t use CMake if US hates you. In what universe would such a tool threaten national security??

Then it's not open source. Not by the definition.

Both the Open Source Initiative and the Free Software Foundation agree that you cannot put restrictions on what the software can be used for and still call it Open Source or Free/Libre Software, respectively. Not even conditions like no commercial use or no military use are allowed. This is why CC-BY-SA (do whatever you want as long as you cite the creator and re-license under the same or compatible license) is considered an Open Source/Libre license, but both CC-BY-NC-SA (no commercial use) and CC-BY-ND-SA (no derivative works) are not.