US presidential hopefuls face off in TV debates
America's presidential hopefuls have faced each other live on TV.
The Republicans clashed over George W Bush's foreign policy - in particular the Iraq war.
The encounter comes just days ahead of the key New Hampshire primaries.
The Democrat candidates - including Hillary Clinton and Barak Obama - launched scathing attacks on each other.
Current Democrat poll leader Obama denied claims from Clinton that he keeps changing his position on certain issues.