The G 7 leaders, in their final communique, have said that the summit in Italy has failed to bridge differences over climate change after United States President Donald Trump remained non-committal over the Paris Agreement.
"The United States of America is in the process of reviewing its policies on climate change and on the Paris Agreement and thus is not in a position to join the consensus on these topics," the Independent quoted the communique as saying.
"Understanding this process, the heads of state and of government of Canada, France, Germany, Italy, Japan and the United Kingdom and the presidents of the European Council and of the European Commission reaffirm their strong commitment to swiftly implement the Paris Agreement," it added
German Chancellor Angela Merkel dubbed the summit that was supposed to decide on the ratification of climate deal, as 'dissatisfying'.
"The entire discussion about climate was very difficult, if not to say very dissatisfying. There are no indications whether the United States will stay in the Paris Agreement or not," Merkel said.
The reaction came after Trump said that the final decision on the ratification of climate deal would be decided next week.
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"I will make my final decision on the Paris Accord next week," Trump tweeted.
Trump has delayed his final decision on the Paris Accord as he wants more time to decide whether the United States should pull out of the 195-nation agreement.
On Thursday, more than 20 Republican senators, led by Senate Majority Leader Mitch McConnell, sent a letter to Trump asking him to leave the Paris Climate Agreement.
Meanwhile, Democrats are urging Trump not to withdraw from the agreement.
As of May 2017, 195 UNFCCC members have signed the treaty, 147 of which have ratified it.
On October 2016, India became the 62nd nation to ratify the Paris agreement.
The Paris Agreement is an agreement within the United Nations Framework Convention on Climate Change (UNFCCC) dealing with greenhouse gases emissions mitigation, adaptation and finance starting in the year 2020.
The language of the agreement was negotiated by representatives of 195 countries at the 21st Conference of the Parties of the UNFCCC in Paris and adopted by consensus on December12, 2015.