No man is an island, so as countries. No country is an island and each and evry country are interconnected and affects each other directly or otherwise, It alliws countries to cooperate with one another concerning relations across boundaries of nation states. International relations are the way to face global economic issues together such as terrorism, environmental concerns, and othe contemporary global issues. IR is really important in maintaining the interconnectedness of countriea regardless of the distance and language and culture boundaries.