A day after UN chief Ban Kimoon expressed hope that US President-elect Donald Trump would let market forces persuade him not to reverse course on climate change, American secretary of state John Kerry too referred on Wednesday to the "multi-trillion" dollar clean energy market and its ability to ensure that US keeps its commitments. Kerry in his speech also mentioned how coal-linked air pollution has been causing 2 crore cases of asthma per year in India and asked world leaders to see for themselves how the use of fossil fuel had a devastating impact on human health. In the context of Trump's scepticism towards climate change phenomena, Kerry also noted that failing to fight climate change would be a "moral failure" when many countries across the globe, including the US, India and China, had already been facing consequences of global warming caused by the use of fossil fuel. Reassuring climate campaigners, Kerry said, "The US is on way to meeting all of international targets set. I don't believe that can or will be reversed." The remark came in the backdrop of Trump's assertion during his campaign that if elected he would withdraw from the Paris Agreement. "Since this COP (climate conference) started, obviously an election took place in my country . And I know it has left some here and elsewhere feeling uncertain about the future. I obviously understand that uncertainty. And while I can't stand here and speculate here about what policies our President-elect will pursue, I will tell you this: the time that I have spent in public life, one of the things that I have learnt is that some of the issues look a little bit different when you are actually in office compared to when you are on the campaign trail," said Kerry . He was speaking at the UN climate change conference here.