On our website, bbc. Co. Uk news, and you can contact me on twitter. Im bbckasiamadera. Now on bbc news, live to singapore for Asia Business report. Trump inksa trump inks a new iran sanction. The us president imposes hard hitting fresh measures against tehran, including the office of the countrys Supreme Leader. Trade war tariffs. We look at how the weapons in the us china conflict work, and whether they are actually effective. Good morning, as you. Hello, world. It isa good morning, as you. Hello, world. It is a tuesday. Glad you could join us it is a tuesday. Glad you could join us for another fabulous edition of Asia Business report. Im rico hizon. We kicked off the programme with the us iran stand off, as President Trump says he is imposing hard hitting President Trump says he is imposing ha rd hitting new sanctions President Trump says he is imposing hard hitting new sanctions on tehran, including on the office of the countrys Supreme Leader and its top military officials. Presid