Can The US Move A Further $0.5 billion? Yes

We understood at the start of the week that the US would table an offer to cap domestic subsidies at $15.5 billion and then come dow to $15 at the end of the week. Instead they started at $15 billion. This would suggest that the current proposal of a further $0.5 billion cut is possible. But will it be enough? If we knew this then India and Brazil would too. Will they be demanding more????