The latest round of UN-led climate talks has opened in Bonn with delegates from almost 200 countries in attendance. <br/><br/>Over the next two weeks, negotiators hope to clarify the rule book of the Paris climate agreement. <br/><br/>It is the first major meeting since US President Donald Trump announced plans to take the US out of the Paris pact last June. <br/><br/>Many delegates are unhappy with White House plans to promote fossil fuels as a solution to climate change.<br/><br/>An adviser to the US President is expected to take part in a pro-coal presentation in the second week of this conference, which is officially known as COP23.