Whilst we are fully aware of the G7 / 8 / 20 's impressive track record of failure at the delivery stage , as we pointed out yesterday , we are wary of dismissing the group 's concerted aims as a further display of empty rhetoric ... we predicted that the market would ask the US Treasury to put its money where its mouth is ; and given where USD / JPY is currently trading , then joint intervention to avert new all time lows would appear to be a highly effective way of doing so .