G7 united against Brexit but can only hope for an 'In' vote

Participants of the G7 finance ministers and central bankers meeting pose for a family picture, ahead of the kickoff of the meeting at Aoba Castle in Sendai, Miyagi prefecture, Japan, in this photo taken by Kyodo May 19, 2016

Finance leaders of the Group of Seven industrial powers united over the weekend in wishing that Britain stays in the European Union, but acknowledged they could do little more than hope.

"The G7 did not talk about a Plan B to respond to what would happen if Britain left the European Union," French Finance Minister Michel Sapin told Reuters on Saturday. "We talked about ways to help Britain stay in the EU."