Chancellor George Osborne warned on Thursday that Britain faces a volatile mixture of perils to its economy, citing problems in China, Russia and Brazil and instability in the Middle East.
"At the start of this year, our economy faces a dangerous cocktail of threats from abroad - from falling stock markets in places like China to instability in the Middle East," Osborne told the BBC.
"Our antidote is to go on putting our own house in order here in Britain so, far from 'mission accomplished' on the economy, 2016 is the year of 'mission critical'," he said ahead of a policy speech in Cardiff later Thursday, when he is expected to stress the need to continue austerity measures.
"It is precisely because we live in an uncertain world. It is precisely because we have not abolished boom and bust as a nation, that you need to take these steps, difficult steps," Osborne told BBC Radio 4.
"The difficult times aren't over," he said.