World Leaders Slam Trump Ahead of COP30 Climate Summit. Global leaders have condemned President Donald Trump for dismissing climate change as the COP30 summit begins in Brazil's Amazon region. Trump, who is skipping the event, was branded a liar by the presidents of Colombia and Chile for rejecting climate science. Speaking earlier at the UN, Trump called climate change "the greatest con job ever," urging nations to reject policies that hurt industry. Brazil's President Lula warned of "extremist forces spreading fake news," while UK Prime Minister Keir Starmer admitted global unity on climate action is fading — though he pledged Britain remains "all in.” However, the UK's surprise withdrawal from a major $125 billion rainforest protection fund angered the Brazilian hosts. Prince William called the fund "a visionary step," urging world leaders to act for future generations. The two-week COP30 summit now faces the challenge of turning sharp words into real action on funding and emissions cuts. Instructions: THIS VIDEO MUST NOT BE EDITED FOR LENGTH TO COMBINE WITH OTHER CONTENT