We're all the same

Buddhism is against war or any other violence.

This is based on the knowledge that we're all the same.
We all want to be loved, we all want to love.
We all have the same basic needs.

From that knowledge the differences between people and countries become less huge.
In fact it facilitates compassion.
And care.

Some people consider war an act of political justice.
They say they're bringing democracy to other people and it's the best they can do.
They even take killing mothers and children as a side effect of the good deed.

Is it acceptable for you that your mother, your brother, your child is killed because someone want to bring you a political system?

Enforcing your own beliefs and views on someone else is not a sign of respect.

Show how well you feel in your own system, if you need to, without showing off.
Just be yourself.
And the other will work from the need to experience the same.
Without war.