Elizabeth Warren defies Native American row to enter White House race

Senator Elizabeth Warren has become the latest Democrat to formally announce she is running for the US presidency.The 69-year-old politician - one of the party's most recognisable faces - had formed an exploratory committee on New Year's Eve looking into a possible bid to win the nomination.This has provided ammunition for her Republican rivals, including President Donald Trump, who has poked fun at Ms Warren, calling her "Pocahontas".