The government is reluctant to make an enemy of the traditional rural community.

ECONOMIST: Charge of the country brigade

To ignore these successes is to make the perfect an enemy of the excellent.

ECONOMIST: Africa's oil riches

The industry has fought back, claiming that Mr Bogle's attacks on their profits make him sound like an enemy of capitalism.

ECONOMIST: Ogling Bogle | The

Stealth does not make an aircraft completely invulnerable to enemy forces.

CENTERFORSECURITYPOLICY: Center For Security Policy

Yes, sparing an enemy might make them grateful in the future, but leaving them alive might also have them popping up later to try to take revenge.

FORBES: Connect

Much of its code is simply camouflage -- 3, 000 lines of programming that make it hard to understand and even harder for an enemy team of coders or even hackers in the civilian population to copy and use themselves.

CNN: The cyberwar may be headed to your computer