It used sham surgery as a comparison, a controversial and rarely used strategy but one that researchers felt was necessary to understand the true effects of the operation.

Until October, many officials had used the controversial strategy known as portfolio insurance to control the asset allocation of their pension funds.

Besides groups with controversial strategies / perspectives which focus on similar outcomes compete with each other.

This controversial strategy was essentially one of deterrence.

Tyson had high-powered legal counsel in the person of Vincent Fuller and his Washington co-counsels, who devised an intriguing, though controversial, strategy.

It was a controversial strategy, "and you wouldn't believe the amount of anger I got from other brokers," Mr. Guerrieri said.

The controversial strategy worked and Riordan lost the primary to the more conservative Bill Simon Jr., 31.4% to 49.5%.

It's a very controversial strategy.

But that could be a controversial strategy in an election year.