France and China plan to introduce new, more powerful nuclear weapons. So are the U.S. and Russia. The Indian government will not sign the test ban treaty because India still wants to have laboratory experiments. Other countries not listed but who have nuclear weapons capability are Israel and South Africa.
Countries known to be working on nuclear weapons include Iran and North Korea.
Wars are fought over mineral rights. The line between North and South Korea bisects the worlds largest tungsten deposit. The Viet Nam war was really about the oil fields in the South China Sea. Hitler sought to expand Germany into the oil fields of southeast Europe and to obtain other natural resources. The latest, the Persian Gulf War was to protect U.S. interests in the oil imports from the Middle East.