I guess we should define danger as that which would cause the most disruption world wide. The US and Russia still have the most ability to "reach out and touch someone", the US being far superior but extended as of now. China is large and well equipped, as is India, but neither have shown tendancies to agression outside their near borders. The US has shown great tendency to disrupt other nations amd regions, but with some cause with the exception of Iraq-not a small exception. What could get several nations such as India, China, the US and/or Russia to commit to a large enough military action to involve the most amount of human life? North Korea could involve the US and China in mutual agression, but N Korea lacks the manufacturing ability for sustained combat and also lacks credible delivery systems for it's nukes as of now. Iran could involve the US and neighboring Arab nations in a war situation, but it is doubtful that China or Russia would be anything more than war suppliers for certain factions. The most dangerous? Pakistan could easily start a war with India over Kashmir, China would back Pakistan and the US would, even after all the current support of Pakistan, back India. This would involve the most amount of people and war materials and cause the most universal suffering. Pakistan's unstable government and nukes put bad scenarios on every situation room in the world. I don't know if what we are doing in Pakistan is good, but they really scare the crapola out of me.