Focuses on a perpetual theme in International Relations - the definition and the legality (or the illegality) of the American interventions in nations from the US-Spanish war in 1890 until Syria, one of the biggest humanitarian disasters mankind has ever seen.The work refers to the International law dictum of Just Cause and Preemption which has become a cornerstone of the strategy for the advancement of American national interest along with the homeland security aspect in the US.The book is the first of its kind from an Indian author premised upon a defence of the American war efforts and humanitarian strivings to sustain world security.