While not infallible, the ancient Latin question is still the best guide to penetrating the bloody murk of modern terrorism: Cui bono? Who benefits? Whose powers and policies are enhanced by the attack? For it is indisputable that the "strategy of tension" means power and profit for those who claim to possess the key to "security." And from the halls of the Kremlin to the banks of the Potomac, this cynical strategy is the ruling ideology of our times.

One last point: a disturbing thing about Wednesday's hearing was the deference with which Democratic senators treated Mr. Greenspan. They acted as if he were still playing his proper role, acting as a nonpartisan source of economic advice. After the hearing, rather than challenging Mr. Greenspan's testimony, they tried to spin it in their favor.

But Mr. Greenspan is no longer entitled to such deference. By repeatedly shilling for whatever the Bush administration wants, he has betrayed the trust placed in Fed chairmen, and deserves to be treated as just another partisan hack