War is often seen as a game of chess, especially to those in command. A few hundred casualties here and a few devastated cities there mean no more to the masters of war than the sacrificing of a pawn.
The writer is disgusted at the 'masters of war' as they treat people's lives with little care and concern. The word 'play' shows that the ‘masterminds’ are very manipulative, play– carelessly have fun find enjoyment in it, means little to them. The word 'my' shows belonging, OWNERSHIP, loyalty to what he stands for. the word 'My' has a tone of unyieldingness, showing that no matter what, he would not give up on his 'world', and would not let it easily perish. The word 'World' implies that it is very precious to him, that it his world, his all. It is invaluable and precious to him
