Canada's G7 summit, under first-time host Mark Carney, had a carefully planned agenda.
That programme was upended by the unfolding war between Israel and Iran and US President Donald Trump's early departure.
Still, Carney said on Tuesday this summit "can begin a new era of co-operation that promotes long-term resilience over short-term efficiency".
Here are five takeaways from the dramatic G7 in Kananaskis, Alberta.
The G7 nations - Italy, the US, France, Germany, the UK, Canada and Japan - were one leader short on Tuesday following the US president's surprise decision to abandon the summit early for Washington DC.
