US-Mexico immigration row: Mexican top diplomat calls Trump's decision "disastrous"

In an unexpected move, US president Trump has announced that he's placing a 5% import tarriff on all Mexican products, with effect from the 10th of June. The move is designed to pressure the Mexican authorities to do more to crack down on migrants trying to cross the border into the US. He has threatened to increase that tarriff to as much as 25% until the illegal immigration situation is brought under control, as he said.