United Abominations is the eleventh studio album by American thrash metal band Megadeth. Released on May 15, 2007, United Abominations is the first Megadeth release distributed through Roadrunner Records and, with the exception of the band's frontman Dave Mustaine, was recorded with an all-new line-up. It is the first album since The World Needs a Hero (2001) to be recorded by a full-time line-up as the previous studio album The System Has Failed (2004) was recorded by Mustaine alongside session musicians. While touring to promote the album, guitarist Glen Drover left the band for personal reasons and was replaced by Chris Broderick, leaving this as the only Megadeth studio album to which he contributed.