@Skynet
Skynet wrote: The nuclear superpowers who have a Veto right in the UN can invade other countries... We still have the law of the Jungle this is sad but this is real politics
I know we do. Without strengthening international institutions, then states have little choice but to seek more power to ensure their own security. This of course comes at the expense of weaker powers whose strategic locations might be important to the major nuclear powers or whose resources the major nuclear powers want to further their own power and assure their own security. Lastly, it will also encourage nuclear weapons proliferation as weaker states seek security guarantees against the stronger major nuclear powers such as China, the US, and Russia.
One of the reasons that India acquired nuclear weapons was after losing a border war with China. So, in response, India acquired nuclear weapons to assure its own security against China and most of their weapons are aimed at China. Of course, this also led to Pakistan acquiring nuclear weapons to counter India's acquisition of nuclear weapons.
What this example demonstrates is why there is a need to have strong international institutions so that states do not feel the necessity to acquire more power, such as through acquiring nuclear weapons, to assure their own security. Currently, as it stands, there is no higher authority than states. States cannot turn to any strong international institutions to resolve disputes and ensure their security and rights as sovereign states are protected.
Given that it is still the law of the jungle rather than the rule of law in the international arena, this obligates states to acquire as much power as possible to guarantee their security and the security of their citizens. This obligation to seek and acquire more power will inevitably come at the expense of other states, especially weaker states and such competition has the danger of spiraling out of control into a global catastrophe.
So, until international institutions are strengthened and are actually effective for both strong and weaker states, then states that have a smart foreign policy will have little choice but to take the Realist perspective on international relations while attempting to work with other states to strengthen international institutions to actually make them effective.