In his argumentation Mr Trump says it's his duty to protect US economy and it's citizens.
"For example, under the agreement China will be able to increase these emissions by a staggering number of years - 13, they can do whatever they want for 13 years, not us. India makes its participation contingent on receiving billions and billions and billions of dollars in foreign aid from developed countries. There are many other examples, but the bottom line is that the Paris accord is very unfair at the highest level to the United States."
Outcry around the world
The disappointment about the US president is great. Some had secretly hoped that Trump would not go through with his threat. The general conclusion:The US harms the world and we will continue to fight climate change.
UN Secretary-General António Guterres said Trumps's announcement was "a big disappointment". Guterres said via a spokesman: "The Paris agreement was passed in 2015 by all countries of the world, because they recognize the huge damage that climate change has already caused." He was confident that cities, states and companies within the US were still fighting for low-carbon economic growth in order to secure the prosperity of the 21st century with suitable jobs and markets.
Ex-US President Barack Obama also spoke up. He accused his successor of denying the future. He was convinced that the US states, cities and businesses would do even more to protect the planet.
Chancellor Merkel: "Preserve the earth"
According to government spokesman Steffen Seibert, Angela Merkel telephoned the US president, expressing her regret over his decision. "I regret the decision of the US president," the government spokesman said on Twitter in the name of the Chancellor. Merkel wanted "further all the strength for global climate policy, which preserves our earth".
The statements of the Minister are supported by a joint declaration by Germany, France and Italy, which is widespread from Italy. It states that the three countries assumed that the Paris agreement could not be renegotiated. It offers "substantial economic opportunities for prosperity and growth".
Macron: "Make our planet great again"
French President Emmanuel Macron said in a relevised speech on Thursday evening: "Tonight, the United States has turned its back on the world." He called to remain confident. "We will be successful, because we are fully committed, because wherever we live, whoever we are, we all share the same responsibility: Make our planet great again."
Denmark's Prime Minister Lars Løkke Rasmussen said on the Twitter short news service: "This is a sad day for the world. Denmark is ready to continue the climate battle to protect future generations."
Britain's Prime Minister Theresa May and Canada's Premier Justin Trudeau were also disappointed after Trump gave them their decision and motivation personally on the phone. Japan and Australia also regretted the withdrawal of the US, but want to continue to stick to the agreement.
China: "Global setback"
In China, the withdrawal of the US has been described as a "global setback". Trump had "decided to the regret almost all others" to cut himself and the United States from a "historic global agreement, in which his country once played a key role," commented the state's Chinese news agency Xinhua.
The conclusion:
According to the director of the Potsdam Institute for Climate Impact Research, Hans Joachim Schellnhuber, the progress of global climate policy will not be materially harmed if America actually leaves the Paris agreement. But the US would be harmed, Schellnhuber said in the ARD Tagesthemen.
"China and Europe will be global leaders on the road to a clean and safe future for energy, and they will strengthen their position when the US slips back into the national."
