Full coverage: Paris Climate Agreement

The United Nations has called the signing of the Paris climate pact "historic". The UN secretary-general, Ban Ki-Moon said the move is "a vote of confidence" for the fight against climate change. 

"Today, the governments of the world made history, just as they did last December in Paris at COP 21. With their signature today, governments have made a covenant with the future. The children who were with us this morning reminded us of our responsibility to them and to future generations. The words, they were on their shirts said clearly, I quote, 'Your promise. Our future,' unquote. Today's signing is a vote of confidence in a due approach to climate change. It is imperative there is a strong political momentum that continues to grow," Ban Ki-Moon said.