I learned about nuclear weapons and national security in Int'l politics class. Some countries want to have more destructive weapons in order to improve their national security. However, in my opinion, it is not a good way. Because it became easier for more and more nations to have nuclear weapons because of the development of technology. Therefore, if A country have strong weapons, B country which want be stronger than A countrie will have more stronger weapons. Then, A country will have more stronger than B country's weapon. It will be a vicious cycle. If many nation do this, the number of destructive weapons will keep increasing and people who are threatened by these weapons will increase. Japan doesn't have nuclear weapons but today, government thinks about having nuclear weapon to improve national security. However, I think Japan shouldn't have nuclear weapons as a country which is only one victim of the nuclear weapon in the world. Nations should improve their national security by showing not have nuclear weapons to other countries. I think if no country have nuclear weapons, no country dont have to be threaten by being attacked.