LA ALERTA ANTI-TERRORISTA del gobierno estadounidense no se basaba únicamente en "información antigua", sino en elementos muchos mas recientes que la confirman:

Senior government officials said Tuesday that new intelligence pointing to a current threat of a terrorist attack on financial targets in New York and possibly in Washington - not just information about surveillance on specific buildings over the years - was a major factor in the decision over the weekend to raise the terrorism alert level.

The officials said the separate stream of intelligence, which they had not previously disclosed, reached the White House only late last week and was part of a flow that the officials said had prompted them to act urgently in the last few days.

The officials disclosed the information a day after the Bush administration acknowledged for the first time that much of the surveillance activity cited last weekend by Homeland Security Secretary Tom Ridge to justify the latest, specific warnings had been at least three years old. At the same time, the White House offered a vigorous defense of its decision to heighten the alert in Manhattan, Newark and Washington, with officials saying there was still good reason for alarm.

[...] In addition to the surveillance activity, detailed in reports uncovered late last week from computer disks in Pakistan, a senior intelligence official said that "very current and recent activity on the part of Al Qaeda'' has left little doubt that "Al Qaeda is moving toward the execution stage of attacks here in the homeland.''

The language used by senior administration officials on Tuesday in warning of a possible attack was at least as strong as that Mr. Ridge used in announcing the alert on Sunday, and much stronger than the language used on Monday, when the officials acknowledged that the reconnaissance reports dated back to the period surrounding the attacks of Sept. 11, 2001. Among other things, one official disclosed on Tuesday that one intelligence report had pointed to a possible attack "in August or September.''

That shifting tone may prove frustrating to the public, providing little guidance for assessing the gravity of threat information whose details remain shrouded in intelligence reports not available to anyone outside the highest ranks of the government.

A senior White House official who mentioned the new stream of intelligence in an interview refused to say anything more about its source or content. The official said it had not been publicly disclosed out of concern that such a step could compromise intelligence and law enforcement operations in the United States and around the world. Officials would not describe those operations but said they were meant to disrupt a possible plot.

But senior federal intelligence and law enforcement officials also described the intelligence as important. They said it had reached the White House last Friday and strongly reinforced the sense of alarm prompted by the separate flow of information that was arriving at the same time via the Central Intelligence Agency from Pakistan and that was based on information culled from seized computer disks that contained detailed case reports of reconnaissance conducted on buildings in Manhattan, Newark and Washington in 2000 and 2001.

In providing new details about those case reports, senior government officials described them for the first time as discrete documents, each at least 20 pages long and devoted to a particular target, and perhaps most intriguingly, they said, written in "perfect English.''

The author of the reports was "obviously someone who has lived an extensive period of time in the West, exceptionally professional, exceptionally meticulous,'' a senior intelligence official said in a telephone interview. "Anyone who thinks that these terrorists are a bunch of ne'er-do-wells, if 9/11 didn't convince them, these case reports would convince them.''

Though the case reports do appear to have been completed before the Sept. 11 attacks, as Bush administration officials first acknowledged on Monday, some of the computer files appear to have been updated or accessed more recently. One was a file modified in January and including a photograph of a building, a senior White House official said. The official also said there was reason to believe that people associated with Al Qaeda who are still at large would have had access to the reports.

La esquizofrenia que supone criticar a la vez que no se previeran los atentados del 11-S y que se estén tomando medidas para contrarrestar una nueva amenaza es magistralmente analizada por Patterico en este post. Y no os perdáis este escenario ucrónico: el candidato Kerry habla una vez materializado un ataque de al-Qaeda como el que se está intentando evitar.