I read an interesting article in the New York Times earlier this month, about how the United States is using cyber-warfare tactics against North Korea to slow the development of an inter-continental ballistic missile that can reach the United States. The effective range maps were startling. (see below)
It seems that Trump has inherited a cyber war program from the Obama administration that was started 3 years ago and targeted the North Korean missile development program. Since that time, there have been a stunning number of launch failures (88%), so it seems to be working.
You may want to click over to the NYT article if you are interested in the details. I am interested in the way that cyber-war is being used by our own and other governments. There is a part of me that appreciates that cyber-war seems to be less destructive from both a loss of human lives and a destruction of civil infrastructure. But then there is a part of me that is thinking that we just may not have gotten there yet.