You are mistaken to think that peace will come to the world through outer pursuits or at some future time because of these pursuits. You would also be misguided to believe that we do not have world peace now because of some other country.
The only way to have peace in the world is to be peaceful ourselves. Being peaceful ourselves has nothing to do with politics, religion, nationality, color or any other label that separates us. The only way to remove these walls of delusion is through self-inquiry. We must let go of who we have become, reconnect with our True-Self revealing the innate peace that resides in all of us. From this place, we can find harmony together through our diversity, instead of thinking everyone must think and be like us. The beauty of this world comes from our difference, not our sameness.
We can continue down the same path that has led us here, or we can be bold and try something different. There is nothing to lose because if we look at the past, we can see that what we have done is not working and we are repeating the same behaviors decade after decade. What would you have the future be for your kids and grandkids? It is not out of reach if we look in first through the journey of self-inquiry.