http://www.livescience.com/20402-human-conflict-evolution.html

Why Peace Is So Tricky for Humans

peace when we heard a word "peace" for human especially for this time we always hear about war at some country. I think a bit hard to say that peace will happen soon. peace is so tricky for humans because they have a selfisheart and do not want to understand another human. Like our close living relatives, chimpanzees and bonobos, humans are hardwired come into conflict with one another, often violently. Even so, like our ancestors, we also have the capacity to resolve fights; something that one anthropologist says has evolved along with our societies over the millennia.

usually if someone has lost something from his life because his selfisheart. he would think in two ways. the first one is they want to apologize and forget about everything he did or he would do something worse than he did before. if he has lost his family for example because  something that he has done like war he would regret his act and he would not do that again because he has lost something from his life. and if he will not regret because his act he would do the worse thing than he did before. peace is very tricky for human because human a bit hard to say sorry or apologize because they just think about theirself not another people.

I think human for right now a bit hard because they would feel ashame to recognize their problem. they do not want feel ashame because they are afraid. if they say sorry for the first time that means that their enemy would think that they are a looser.  it will be hard if someone would not say sorry or recognize their mistake first.