U.S. President Donald Trump, left, French President Emmanuel Macron and EU Council President Donald Tusk, right, watch the Frecce Tricolori Italian Air Force acrobatic squadron performing, in Taormina, Italy, Friday, May 26, 2017.
America's exit from the Paris Agreement wouldn't invalidate the accord, which still has the support of most of the world, including China, and is likely to proceed without US participation.
The six-page final communique from the summit says six of the leaders, including Canada, agreed to stand by their commitment to implement the Paris Agreement.
German Chancellor Angela Merkel and President Trump walked away from the G7 summit in Sicily with very different takes on the meetings.
The US President told leaders of the G7 countries that they would have to wait until next week for his decision on whether America would honour its undertakings under the Paris Agreement to limit global warming.
"Having been a North Atlantic Treaty Organisation officer, under President Bush and President Obama and then having been back there in Brussels representing the Department of Defense under President Trump... this is a consistent message that we have given the North Atlantic Treaty Organisation nations", Mattis told the broadcaster.
"There are no indications whether the United States will stay in the Paris Agreement or not". This time the G-7 leaders reiterated a "commitment to keep our markets open and to fight protectionism". His Treasury secretary, Steven Mnuchin, has said the United States reserves the right to be protectionist if trade arrangements are unfair to USA companies and workers.
The split statement like the one on climate is an unusual development at the G-7, which usually seeks to provide a united front on the issues it addresses.
And the White House said G7 leaders had a "very robust" conversation before agreeing a final communique which stated the "strong commitment" of Canada, France, Germany, Italy, Japan, and the United Kingdom to the 2015 Agreement, but noted that the USA was "not in a position to join the consensus on these topics".
Trump "is isolating the US from its most important allies and those allies stood strong in the face of backsliding", Heather Coleman, climate director at Oxfam America, said in a statement referring to the Paris Agreement policy of not weakening climate-related commitments over time. Its decisions are not binding as an global treaty would be, simply representing the leaders' political commitment to carry through on their collective decisions.
The summit of G7 wealthy nations pitted Trump against the leaders of Germany, France, Britain, Italy, Canada and Japan on several issues, with European diplomats frustrated at having to revisit questions they had hoped were long settled.
UK: Manchester attack investigation still at 'full tilt'
In the aftermath of the bombing, the star shared her deep condolences to the families of the victims and paid tribute to the city. They also have published CCTV images of Abedi on the night of the attack, which show him wearing a hat, glasses and a dark top.