That would be the UK
"US has the best justice money can buy.
(If you don't have money, you can't have any)"
Actually that would be NZ. For some reason the NZ lawyers did not need a judge's permission to withdraw from the case. That's frankly puzzling.
Dotcom's US lawyers are still on board, like Rothken. As far as one can tell, they're now fighting the US side of this fight for free (pro bono publico).