Can US-China trade truce become a bigger bargain?

US President Donald Trump lauded on Sunday "the incredible deal...one of the largest ever made" with Xi Jinping at the G20 in Argentina. Yet questions remain about whether the agreement will be any more than a temporary truce, or the beginnings of the bigger US-China grand bargain which the American leader wants.

As ever from Mr Trump, the rhetoric surrounding the meeting was fuelled with hyperbole. He described it as an "amazing... meeting with unlimited possibilities".

Given the massive stakes in play, both sides stepping back from the precipice of further sanctions in January is …