But they expressed caution, saying it was too soon to celebrate.

Several groups have expressed caution about the debt relief plan.

But one environmental researcher expressed caution today about the study's conclusions.

But some researchers expressed caution about the new findings.

Western diplomats expressed caution about the scale and conditions of such a release, if it should occur.

Among Washington's Arab friends, leaders began to express caution about what the administration's plans.

But other scientists expressed caution about the report, calling for more research.

But the study's authors expressed caution about their finding.

But now, major American and European businesses are again expressing deep caution.

Analysts continued to express caution, as they have for months, about the highfliers.