WASHINGTON, April 17 (AFP) - The US government should be "embarrassed" over the apparent failure to uncover weapons of mass destruction in Iraq, retired intelligence officials who opposed the war said Thursday. "It's going to be very embarrassing when it turns out they have nothing to declare," said Eugene Betit, a former defense intelligence analyst who belongs to Veteran Intelligence Professionals for Sanity (VIPS), formed in January to speak out on the use of intelligence to justify the war. Another, former CIA station chief Ray Close, said: "I'm hoping they will be embarrassed into acknowledging a role for some independent...