in history'. a volcanic eruption in hawaii forces hundreds of people to leave their homes. also in the programme, the swedish academy vows to reform after this year's nobel prize for literature is postponed over a sexual harassment scandal. hello and welcome to bbc news. president trump has vowed to defend american‘s right to own guns in a speech at the national rifle association's convention in dallas, texas. he was back among his core supporters after a tumultuous week in which he's faced growing scrutiny about his alleged affair with stormy daniels, an adult film star. at the nra convention he seemed to dismiss the idea of tighter gun control laws after february's mass shooting at a high school in florida. gary o'donoghue reports from dallas.