welcome to bbc news, broadcasting to viewers in north america and around the globe. my name is nkem ifejika. our top stories: finance ministers from the g7 warn america that its steel and aluminium tariffs could spark a trade war within days. china rejects allegations by the us that it's trying to intimidate neighbours in disputed areas of the south china sea. thousands of palestinians attend the funeral of a nurse killed by israeli gunfire. her mother says she was trying to help injured protestors in gaza. translation: this is what she was resisting with. on what basis did the soldier kill her? she has been targeted since the first day of the protests. after decades of communist rule in cuba, could the new president be about to bring in significant changes to the way the country is run? hello, and welcome to bbc news.