Moody's Affirms Assured Guaranty Corp. at Aaa and Assured Guaranty Re at Aa2 (March 14, 2008)Standard & Poor's Publishes Updated Results of Bond Insurance Stress Test: Assured Guaranty Corp. Rated AAA (Stable) (January 17, 2008)Fitch Affirms Assured Guaranty's IFS Rating Following Review of Subprime Exposure (December 12, 2007)