NATO leaders set aside public insults ranging from "delinquent" to "brain dead" and "two-faced" on Wednesday, declaring at a 70th anniversary summit they would stand together against a common threat from Russia and prepare for China's rise.

Officials insisted the summit was a success: Most notably, Turkish President Tayyip Recep Erdogan backed off from a threat to block plans to defend northern and eastern Europe unless allies declared Kurdish fighters in Syria terrorists.

But the meeting began and ended in acrimony startling even for the era of U.S. President Donald Trump, who arrived declaring French President Emmanuel Macron "nasty" and left calling Canadian Prime Minister Justin Trudeau "two-faced" for mocking him on a hot mic.