Tariffs have emerged as possibly the defining aspect of Donald Trump's presidency and they're poised to make life a lot harder.

American and Chinese officials have started talks in Switzerland to de-escalate a trade dispute between the world's two biggest economies that has global implications. There is hope that the countries can scale back the tariffs they have slapped on each other's goods,

Trump proposed to lower tariffs on Chinese imports to 80% from 145% on eve of negotiations with the country's third-largest trading partner.