Three days after Donald Trump hailed his “amazing and productive” dinner with Xi Jinping where they called a ceasefire in the US-China trade war, the US president seemed to be wondering whether the deal was already teetering. In tweets on Tuesday, Mr Trump said his team would be “seeing whether or not a REAL deal with China is actually possible” by early March, the next deadline in the talks. “If it is, we will get it done . . . if not, remember, I am a tariff man,” he said, reviving his threat to use higher levies on Chinese imports to dial up the trade conflict with Beijing. Mr Trump’s apparent unease follows a troubled aftermath to the truce reached after the G20 in Buenos Aires, at least for the White House. A number of the concessions that officials in Washington claimed to have secured from the Chinese president and senior officials in Beijing were either unsupported by any official confirmation from the Chinese side or were mired in confusion. Not only did this cast doubt on whether the two sides would be able to reach a comprehensive deal within the next three months, it raised the possibility of a collapse even before then.