But he told reporters today that Mr. Clinton was "coming forward and leading on a very tough set of issues.

As Tom wrestled with a tough set of equations, the telephone jangled.

Once the Eliminator is destroyed, the game restarts with a tougher set of enemies.

Whatever plan he offers needs to start with a tough set of political benchmarks for national reconciliation that the Iraqi government is finally expected to meet.

The band put on a tough, precise set that mixed rap and hard rock, all drenched in politics.

"He was a part of helping the agency make a real tough set of decisions."

I missed chances, he played well and in the end it was a tough fifth set.

"These are one tough set of people we've got here."

"It presents a tough set of environmental and smart-growth tradeoffs," he said.

"It was a tough set of circumstances," he said.