A man wearing a mask portraying newly elected US president-elect Donald Trump poses with a sign during a demonstration against Trump's vow to withdraw the US from the Paris Climate Accord outside the US Embassy in central London in November 18, 2016. A UN climate conference on November 18 appealed to the "pragmatism" of president-elect Donald Trump, who has threatened to pull the US out of a global pact to rein in global warming. The first gathering of the UN's climate forum since last year's adoption of the Paris Agreement to curtail disastrous global warming, is tasked with drafting a roadmap for its execution. It has been overshadowed by uncertainty about Trump's vow to "cancel" the pact to rein in greenhouse gas emissions blamed for planet warming. / AFP / Daniel LEAL-OLIVAS (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
