totally implausible

Carne Ross, a key Foreign Office diplomat responsible for monitoring UN arms inspections in Iraq, said in 2005 that British government claims about Iraq's weapons programme had been "totally implausible". Ross told the Guardian:
"I'd read the intelligence on WMD for four and a half years, and there's no way that it could sustain the case that the government was presenting. All of my colleagues knew that, too." (Richard Norton-Taylor, 'WMD claims were "totally implausible",' The Guardian, June 20, 2005)