The G7 Summit in Canada, is split between the United States and six other major advanced economies, as US President Donald Trump's unipolar economic and strategic doctrines continue to undermine US alliances with other countries, world trade – and the US itself, said Dan Steinbock on China Daily. He is the founder of The Difference Group and a visiting fellow at the Shanghai Institutes for International Studies.

Trump's quest to foster US geopolitical primacy is alienating the very same allies and partners he would need to sustain the US' economic and strategic leadership. And what the leaders of the advanced economies are coping with is not a "G-Zero" world, but one in which major advanced economies seek multilateral cooperation – which Trump sees as a threat to his "America First" worldview.

The underlying tensions of the G7 Summit reflect the ongoing friction. Germany opposes US trade protectionism, as do France and Britain, not to mention Italy, Japan and Canada. While major European Union member states are very concerned about the future of a US-EU free trade deal, the crumbling NAFTA has sent Canadian Prime Minister Justin Trudeau to "modernize" bilateral deals in Europe, while seeking new partners in Asia. These "G6 economies" oppose US policies against Iran and its one-sided policies in the Middle East. Many are uneasy about the US' new "Cold War" against Russia.