That starting wars does not help for starters! The only way to resolve this is understanding between religions and nations, and not treating all people of a given culture as 'the enemy'. You can't win a 'war on terror' by shooting people but only by winning their 'hearts & minds'. If Israel and Palestine could be sorted out it would go a long way. We should not be propping up dictators. We should not be in the Arms Trade.
I could go on but that will do to begin with, now discuss!