These presidents understood that diplomacy backed by real leverage was a fundamental tool of statecraft.

NPR: Transcript: Obama's Speech at AIPAC

Knowledge of rights and freedoms is considered a fundamental tool to guarantee respect for the rights of all.

UNESCO: Human Rights Education in Scotland

Summary: Over the past decade, content marketing, specifically in the form of online video, has become a fundamental tool for connecting with consumers.

FORBES: Marketing and Sales

That Obama would attempt this highly unpopular transfer yet again is further symptomatic of his failure as a wartime Commander-in-Chief, shown this time through his unwillingness to use military detention -- a tool fundamental to the prosecution of a war -- despite clear authority from Congress to do so.

CENTERFORSECURITYPOLICY: A Question Not Asked

Innocence and wonder -- the type of human traits fundamental to Spielberg's vision of childhood -- are not in Bay's tool kit.

CNN: Review: Dim 'Transformers' thuds with action

Using technical analysis is another tool when determining when to buy or sell shares but needs to be in conjunction with fundamental analysis.

FORBES: Connect