G7 - the "Group of Seven" countries - came together in 1975 as the seven most important industrialized nations at the time.
These seven countries are the US, the UK, France, Germany, Italy, Japan and Canada. In 1998 Russia was added and the group expanded to G8, before it was excluded again in 2014 after Russia's annexation of the Crimean peninsula.
German Chancellor, Angela Merkel, is known for her prudent words and careful diplomacy. But following the G7 summit in Taormina, Sicily, she spoke out, not once but twice, in a way which seemed to signal a shift in the post-war order. An order which until now has seen European countries in a happy alliance with the US. Analyst Heinz Schulte talks about the shift.