China is a vast and overpopulated country in the eastern Asia whose energy security and supply is the most important factor of economic growth and consequently, economic, social and political security. By the past decades, its leaders have understood the key role of economic growth and development in the economic and political security of china. Thus, they have put all their concentration on th...

security building processes after world war ii, were under the influence of realistic thoughts. this was considered a reaction to idealistic and institutional approaches. critical school attempted to criticize classical and structural realism. new security theoreticians emphasize on extended subjects and diverse threats and believe it to be beyond the competition of countries. they believe that...

The effective tax on earnings embodied in the Social Security retirement earnings test has been as high as 50 percent. Despite numerous empirical studies, there is surprisingly little agreement about whether the earnings test affects male labor supply. In this paper, we provide a comprehensive analysis of the earnings test for men using longitudinal administrative earnings data and more commonl...