At the World Economic Forum in Davos, global economic experts express mixed views on Trump’s announced US tariffs, raising concerns about trade fragmentation, rising consumer prices and potential retaliation from key trade partners like China. "Will they be effective? I wouldn't dismiss out (it)", says the director of Bain and Company’s Macro Trends group (MTG), an economic data provider. "I think if tariffs are raised, we'll probably see more fragmentation of the global trade and the global world," says chief economist Fernando Honorato Barbosa. IMAGES AND SOUNDBITES