The G7 Summit is underway in Biarritz, France. Analysts say the main fault lines at the G7 summit are over issues including climate change, trade and the Iran nuclear deal — with U.S. President Donald Trump, in many instances, isolated by his own positions.

"Unquestionably, on big issues that really matter, [for example] on climate change, on international trade, on Iran, what we see at the previous two summits that President Trump attended, I see no reason why things might change at this summit," said Dr Tristen Naylor, researcher of International Relations at London School of Economics (LSE).

Liu Mingli, the deputy director at the Institute of European Studies at the China Institutes of Contemporary International Relations, said Group photos are being taken at the G7 summit, but the media widely expects a no-communique conclusion of this year's meetings, which would be a first in 44 years.

Liu explained "so far, many of the divisions are among the G7 leaders. If they have achievement, that would be the G7 leaders decide to maintain this mechanism. I think that is very important. Even though there are disputes, group of nations [should] come together to resolve the international challenges."

During an unscheduled lunch on Saturday, the presidents of France and the U.S. made an effort to ease trade tensions. But President of the European Council Donald Tusk acknowledged it would be hard to find common ground.

"Last year we have pay high attention to France and the U.S. relations, someone called the special relationship between the two nations. But major divisions among the two countries are not just about tariffs, which is only small proportion of divisions between two sides. I think the first challenge is agriculture industry," Liu pointed out.

"We know the EU and the U.S. have declared to start free trade talks last year, but the major challenge is whether EU will open the agriculture industry to U.S., I think French President had made it clear by saying 'we can have a trade deal with U.S., but leave alone the agriculture industry', if it opened to U.S., I think Macron will have challenges inside France. It's very difficult to solve this issue," Liu noted.

"This meeting is also a "world debut" for UK Prime Minister Boris Johnson. The UK has new Prime Minister and new policy about Brexit. Brexit is number one challenge for the new government, and Johnson have very tough position to all his partners," said Liu.

"So if Johnson want to employment his tough policy, he needs bargain new trade and relations with America. If they have a good trade deal with the United States, which would be good for Johnson, and bargain with partners, which is a very long and difficult process.” Liu concluded.