The article is paywalled, but if they are launching from a US Government owned launch facility, they would need permission to use it. They would also need US a

The article is paywalled, but if they are launching from a US Government owned launch facility, they would need permission to use it. They would also need US airspace approval as well. There are probably quite a few other regulations they would need to adhere to as well. I would imagine it would be the same for any other country that has launch facilities as well.