Yes there ever can be peace on earth. My assertion can happen but not without the mutual efforts of civilize societies to eradicate religious extremism which breeds terrorism. There is need for educating many religious zealots - "extremists", who think they are the best in culture/tradition and so their religion is the best and most perfect. Thus they choose to call them of other religious sects or them without religious affiliations as infidels. These religious extremists are trully ignorant and don't use their education little or enough to enhance their social standing. They are always not curious or anxious to pry their holy books but are at the mercy of their religious leaders to brainwash them - "MASTER says". May I suggest that civil religious persons and society - both christians, moslems, hindus, budhists, etc should know noone was created infidel by God. God scales noone infidel. The extremists should be taught to respect everyone's social or religious standing. The whole civilize world should educate rather than support these zealots and there ever will be peace on earth.