Mind the Gap of Inequalities Between and Within Countries

'Mind the gap!' is an expression meaning a visual or audible warning phrase to take caution while crossing the gap between the train door and the platform. The subject of this paper is to highlight the existing inequalities, even the case of East-West, and the necessity that, by political will and concrete economic and social measures, not only by warnings, mitigate these disparities for the benefit of the parties concerned. This means that, through continuous political awareness of these inequalities, paying attention to this scourge of today's world and implementing such measures in order to ensure a strategic game type win-win. The methods used in this paper are represented by primary data collected from international reports and situations about the status of today's world countries and national analyses published. All these data and information become base for the analyses of this issue and the emergence of valuable recommendations, rather than conclusions, regarding the counterbalance East and West, apart from the famous and classic example of David Ricardo regarding the theory of the international trade between the rich and developed North and the poor and underdeveloped/developing South, in Europe and the world. Awareness, alertness and prompt responses to all challenges and a balanced development type win-win, here they are the keys for a modus vivendi and sustainable evolution.