WASHINGTON — In a report long delayed by partisan squabbling, the Senate Intelligence Committee on Thursday accused President Bush and Vice President Cheney of taking the country to war in Iraq by exaggerating evidence of links between Saddam Hussein and Al Qaeda in the emotional aftermath of the Sept. 11, 2001 terrorist attacks.

"The president and his advisers undertook a relentless public campaign in the aftermath of the attacks to use the war against Al Qaeda as a justification for overthrowing Saddam Hussein," Sen. John D. Rockefeller IV, the committee's Democratic chairman, said in a statement accompanying the 171-page report.

The committee's report cited some instances in which public statements by senior administration officials were not supported by the intelligence available at the time, such as suggestions that Saddam Hussein's Iraq and Osama bin Laden's al Qaeda were operating in a kind of partnership, that the Baghdad regime had provided the terrorist network with weapons training, and that one of the Sept. 11 hijackers had met an Iraqi intelligence operative in Prague in 2001.

But the report found that on several key issues, including Iraq's alleged nuclear, biological and chemical weapons programs, public statements from Mr. Bush, Mr. Cheney and other top officials before the war were generally "substantiated" by the best estimates of the intelligence agencies, though the statements did not always reflect the agencies' uncertainty about the evidence. All the weapons claims were disproved after invading troops found no unconventional arsenal and little effort to build one.

Republicans on the committee sharply dissented from some of its findings and attached a detailed minority report that listed pre-war statements by Mr. Rockefeller and other Democrats describing the threat posed by Iraq.

"The report released today was a waste of committee time and resources that should have been spent overseeing the intelligence community," said the minority report, signed by Sen. Christopher S. Bond of Missouri, the committee's top Republican, and three Republican colleagues.

A second committee report, also made public on Thursday, detailed a series of clandestine meetings between Pentagon officials and Iranian dissidents in Rome and Paris in 2001 and 2003. It accused Steven Hadley, now the national security advisor, and Paul Wolfowitz, the former deputy defense secretary, of failing to properly inform the intelligence agencies and the State Department about the meetings.

The two reports are the final parts of the committee's so-called "phase two" investigation of pre-war intelligence on Iraq and related issues. The first phase of the inquiry, completed in July 2004, identified grave faults in the intelligence agencies' collection and analysis of the threat posed by Saddam Hussein.