BBC: Hillary Clinton has issued a stark warning to Iran, as Democrats in Pennsylvania vote to choose between her and Barack Obama to run for president.
She said the US would attack, and could "obliterate" Iran, if it launched a nuclear strike on Israel.
Mrs Clinton has been playing up foreign affairs and leadership as she tries to make up ground in the Democratic race.
She leads polls in Pennsylvania, the largest remaining state, but analysts say her hopes depend on a big victory. Clinton's Poll Day Threat to Iran >>>
The Dawning of a New Dark Age (Paperback - UK)
The Dawning of a New Dark Age (Hardback - UK)
