Yes, a new treaty will be needed for Croatia and other applicants, but it could easily be a one-page text that simply rejigs votes and seats, not a full-blown constitution.

• 的确，我们需要一份新的协议以便吸纳克罗地亚和其它的申请者，但它大可以是调整票数与席位的一页文书，而非一整套的宪法。