Why do western armies always tell their enemies when they will attack?

[ArcticGabe]

Lostplanet22 said:
To win the sympathy of the world, just invading a country will create an hate/disgust for the invading country, while warning them politicians/population around the world will have debates about it 'what if country X invade country Y' If most of the world doesn't agree with an invasion the invasion and occupation can do the invading country a lot of harm.

Agreed 100%

In a word: Hypocrisy