Now lets read all of what Ritter was saying...
At the time he resigned he was saying....
"In August 1998, Ritter resigned his position as UN weapons inspector and sharply criticized the Clinton administration and the U.N. Security Council for not being vigorous enough about insisting that Iraq's weapons of mass destruction be destroyed. Ritter also accused U.N. Secretary General Kofi Annan of assisting Iraqi efforts at impeding UNSCOM's work. "Iraq is not disarming," Ritter said on August 27, 1998, and in a second statement, "Iraq retains the capability to launch a chemical strike." In 1998 the UNSCOM weapons inspectors were withdrawn from Iraq. They were not expelled from the country by Iraq as has often been reported (and as George W. Bush alleged in his infamous "axis of evil" speech))[citation needed] . Rather, according to Butler himself in his book Saddam Defiant, it was U.S. Ambassador Peter Burleigh, acting on instructions from Washington, who suggested Butler pull his team from Iraq in order to protect them from the forthcoming U.S. and British airstrikes which eventually took place from from December 16-December 19, 1998."
"Between the Inspections: 1998-2002
Scott Ritter later accused some UNSCOM personnel of spying.[32] On August 31, 1998, Ritter said: "Iraq still has proscribed weapons capability. There needs to be a careful distinction here. Iraq today is challenging the special commission to come up with a weapon and say where is the weapon in Iraq, and yet part of their efforts to conceal their capabilities, I believe, have been to disassemble weapons into various components and to hide these components throughout Iraq. I think the danger right now is that without effective inspections, without effective monitoring, Iraq can in a very short period of time measure the months, reconstitute chemical biological weapons, long-range ballistic missiles to deliver these weapons, and even certain aspects of their nuclear weaponization program."[33]"
Then, after being away from the inspections for almost a year.... he started saying....
"In June, 1999, Ritter responded to an interviewer, saying: "When you ask the question, 'Does Iraq possess militarily viable biological or chemical weapons?' the answer is no! It is a resounding NO. Can Iraq produce today chemical weapons on a meaningful scale? No! Can Iraq produce biological weapons on a meaningful scale? No! Ballistic missiles? No! It is 'no' across the board. So from a qualitative standpoint, Iraq has been disarmed. Iraq today possesses no meaningful weapons of mass destruction capability."[34]"
The prior to the war, he went as far as to say your quote....
In 2002, Ritter stated that, as of 1998, 90–95% of Iraq's nuclear, biological, and chemical capabilities, and long-range ballistic missiles capable of delivering such weapons, had been verified as destroyed. Technical 100% verification was not possible, said Ritter, not because Iraq still had any hidden weapons, but because Iraq had preemptively destroyed some stockpiles and claimed they had never existed. Many people were surprised by Ritter's "bizarre turnaround" in his view of Iraq during a period when no inspections were made.[35] In 2000, Ritter produced a film that portrayed Iraq as fully disarmed. The film was funded by an Iraqi-American businessman who had received Oil-for-Food coupons from Saddam Hussein that he sold for $400,000.[36][37] During the 2002–2003 build-up to war Ritter criticized the Bush administration and maintained that it had provided no credible evidence that Iraq had reconstituted a significant WMD capability. In an interview with Time in September 2002 Ritter said there were attempts to use UNSCOM for spying on Iraq.[38]"
Now tell me... what exactly did he have access to that could have so drastically changed his mind????????