Let us stop doing whatever we are doing for a moment and reflect on these simple assertions:
1) we all are organic including every being that we can categorize as having a life form of one sort the other.
2) Every life form consumes food in one fashion or the other.
So whatever we do should ultimately funnel down to keeping this vast ecosystem that supports the life form, without any regard for geographical boundaries that nations have drawn, to be in good shape.
Then everything we do must boil down to having a means to do that. It means that we have means to remove dangers to life forms to perish and means to add certainties to life forms to flourish. This needs us to design a system that helps a recursive learning that helps us to manage this ecosystem from internal and external impediments, even when they are political, social, economical, man made or God made.
What kind of learning has to happen to do that?
What kind changes do we need to make in our lifestyle?
Who should be administering such global ecosystem and still can have overriding policies over any policies that a nation may like to implement in its own interest?