i'm celia hatton with bbc world news. our top story. fears of a trade war are running high as the white house confirms that new import tariffs are just days away. the white house says the american president is ready to move forward with his plans to impose tariffs on steel and aluminium imports. mrtrump wants china to reduce its trade imbalance with the united states by $1 billion. diplomatic envoys from south korea are expected to bring a private message to the us president from north korea when they visit washington later this week. the undisclosed communication was given to them by kim jong—un during rare talks between the north and south on monday. and the story in britain of what looks like a murder attempt on a former russian spy is trending on bbc.dom. british police say a nerve agent was used in a deliberate attempt to kill sergei skripal and his daughter. they were found collapsed on a bench in a public park on sunday. that's all from me now. stay with bbc world news.