It's not my job to protect my house from a foreign military that might want to come into it and steal things from me.
Nor should I install radar systems to alert me to enemy aircraft. That's why the USA spends the better part of a trillion dollars on the military.
That's my government's job and they should do that job. That's what I'm saying.
If a foreign government sent boats full of marauders to our shores to steal from people's homes and stores, you think the government would look the other way?
I don't. I think they'd blow the boats up and kill the marauders.