The U.N. is much more than the case of Iraq.

The whole thing is a process, which only moves along centimeter by centimeter, ... Even if Iraq would cooperate immediately, actively and unconditionally with us, we would need several months.

The commission has not at any time during the inspections in Iraq found evidence of the continuation or resumption of programs of weapons of mass destruction or significant quantities of proscribed items, whether from pre-1991 or later,

UNSCOM had a practice of not revealing names of companies of suppliers of equipment to Iraq because they often had the possibility of getting information from these companies, and the best way to get these companies to talk to them was not to publish their names to start with,

The commission has not at any time during the inspections in Iraq found evidence of the continuation or resumption of programs of weapons of mass destruction ... whether from pre-1991 or later.

So interviews are a valuable tool, but under certain circumstances they'd be more valuable than others.