Teen-activist from Sweden, Greta Thunberg has castigated world leaders in her recent speech for failing her generation by their empty words and fake promises on Climate Change.

Thunberg who is in United States to attend the Climate Action Summit organised by the United Nations delivered an emotional speech where she accused world leaders, of betraying the young generation on preventing climate change. “You are still not mature enough to tell it like it is. You are failing us. But the young people are starting to understand your betrayal.”

“We are in the beginning of a mass extinction and all you can talk about is money and fairy tales of eternal economic growth, how dare you?”

On September 20, Greta led the Global Climate Strike in what was the biggest strike against climate change, children and teenagers urged world leaders and climate change deniers to wake up to the cause that concerns the existence of humanity.

In her speech visibly emotional Thunberg said, “You have stolen my dreams and my childhood with your empty words.”

“The eyes of all future generations are upon you. And if you choose to fail us I say we will never forgive you. We will not let you get away with this. Right here, right now is where we draw the line.”

At the Climate Action Summit, Prime Minister Narendra Modi, told delegates that “the time for talking is over” and announced a plan to ramp up renewable energy but he did not announce any phase-out of coal, a key goal set by António Guterres, the UN secretary-general who convened the summit.

Angela Merkel, the German chancellor, did set out the end of coal mining in her country but only by 2038, which is a lengthy time frame that disappointed environmentalists.

Despite Guterres’ efforts, the summit was overshadowed by its absentees most notably the US, and Jair Bolsonaro’s Brazil, whose representatives were reportedly not selected to make a presentation there because of Brazil’s failure to outline plans to strengthen its efforts to counter climate change.

Thunberg, arrived in the US last month on a solar-powered yacht, has already blasted US Congress and leaders at the UN. She also sat down with former US president Barack Obama, and received an Amnesty International award.

On Monday she joined 14 other children to lodge a formal complaint under the UN convention on the rights of the child. The complainants, from countries including Argentina, the Marshall Islands, France, Germany and the US, claim that countries’ failure to address the climate crisis violates the international convention.

US President Donald Trump who skipped the Climate Action Summit also reacted to Thunberg’s speech and in an attempt to troll her said, “She seems like a very happy young girl looking forward to a bright and wonderful future. So nice to see!”

A recent video also shows Greta’s epic reaction to Donald Trump’s arrival at the Climate Action Summit who had come to attend PM Modi’s announcement at the event. In the video Greta can be seen turning furious the moment she sees US President.