Wall Street leaders including Lloyd Blankfein and James Gorman, who have courted business in Vladimir Putin’s Russia, are facing a dilemma as tensions over Ukraine escalate.
As swingeing government cuts bite, critics may have questioned George Osborne's soul, but Barack Obama appears to have no such doubts about the chancellor.
Not for the first time, the dress code has proved to be one of the trickier aspects of the G8 agenda.
When eight of the world's most powerful leaders wrap up their meeting in Ireland next Tuesday, look for bold pledges to curb widening trade protectionism and close global tax loopholes.
Eleven years after Italian police savagely beat scores of protesters at the Genoa G8 meeting in 2001, leaving one British activist in a coma, an Italian court has upheld the convictions of senior officers for their roles in the raid.