Southeast Asia is set to be the region hardest hit by American tariffs, according to a new UN report, with observers saying the fallout could push Asean deeper into China’s orbit as the US raises the price of entry to its vast consumer market.The report from the United Nations Development Programme forecasts a 6.4 per cent slump in exports to the United States from the wider Asia-Pacific, driven by price increases from tariffs.But for Southeast Asia – a linchpin in global supply chains and a...