French President Emmanuel Macron will urge wealthy countries and global companies to increase climate financing to accelerate efforts to combat global warming and help poorer nations deal with the impact of climate change. <br/><br/>Macron is hosting the "One Planet" summit on the two-year anniversary of the Paris climate accord, which saw nearly 200 governments agree to end their heavy reliance on fossil fuels and limit further global warming. <br/><br/>Macron will want to show that progress towards those hard-fought goals is being made, even after President Donald Trump said in June that he was withdrawing the United States from the pact.<br/>Some 50 world leaders are due to attend the Paris meeting today, including Mexican President Enrique Pena Nieto and leaders of states on the sharp end of climate change such as Chad, Madagascar and Peru. <br/><br/>The United States will send only an official delegation from the Paris Embassy, but superstars Leonardo Di Caprio and Arnold Schwarzenegger and California Governor Jerry Brown, leader of the world's sixth largest economy, are due to champion a more concerted effort to tackle global warming.