up at myself and... it hello and welcome. i'm katty kay in washington, christian fraser is in london. the first shots in a trade war between china and america were fired last month. but they were small compared to what the trump administration is planning next. this week chinese officials will fly to washington to try to prevent a full scale artillery assault on chinese exports to the us. and today hundreds of american businesses added their voice telling the white house, please don't ratchet up this battle. many us importers don't like it and nor do some exporters. here's one example — american lobster sales to china had been growing steadily in recent years, but that stopped when beijing hit the american lobster industry with a 25% import tax. it was retaliating against us tariffs on chinese goods. it's exactly how trade wars start. nick bryant reports from maine. the waters off maine has become an unexpected theatre of the trade war. with the local lobster fishermen in the...