The automobile is an onerous, expensive obligation and necessity, and in the case of the working poor a brutal tax.

WSJ: Why Driverless Cars Are Inevitable��and a Good Thing

But his examples do not make as powerful a case for the necessity of corporate social responsibility as he would like.

ECONOMIST: The burdens of responsibility

In this case, some form of reconciliation is a social necessity.

CNN: A Debt-Threatened Dream

Mr Yates was questioned about the necessity for dawn raids and "beating down the door" in a case of this type, by Tory MP Charles Walker.

BBC: NEWS | UK | UK Politics | Key points: Cash-for-honours hearing

And in terms of the operational details, we have gotten to the point where we cannot cross lines because of the necessity for preserving the methods and operational techniques and capabilities of the kinds of forces that were used in this case.

WHITEHOUSE: Press Briefing

In seeking to balance the supposed necessity of finality against the obvious need to protect the innocent from all-too-frequent errors, the case probes the viability and scope of the constitutionally-protected writ of habeas corpus, the procedural device for reviewing otherwise final judgments based on newly-discovered evidence.

FORBES: Jeffrey MacDonald, Innocence, and the Future of Habeas Corpus