Unity is only an idea that not many people across culture, continent, religion, creed and so on may not share or even practice.

Biasness, prejudice, spite, jealousy and intolerance so on breeds the perfect ingredients for us to kill each other.

When ideas clash some may resort to a compromise, but some may use force to impose ideas on others. (thinking that it is right)

the sole purpose of having a military is to defend ones belief..

needless to say history presents us with numerous reasons why a country needs to have military until today.

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In the future, may be we will achieve unity, wars among civilisation may come to an abrupt end. Nevertheless, we will still need to retain our capability to fight...

who knows what lies beyond the last frontiers of space?

or may be a piece of coment hurling towards earth?