The rules on armed conflict on Earth are a major source of restraint on military operations. But the rules on the use of weapons in outer space are far from clear. We need to change that.
South Africa's homicide rates have declined consistently since democracy, but remain among the highest in the world. They are about four times the global average at more than 30 per 100,000 people.
Today's nuclear arsenals are so powerful that dropping a Hiroshima-size bomb every two hours for 70 years would not exhaust their destructive capacity. The global disarmament regime is broken.