BRUSSELS (Reuters) - A Hungarian veto to the European Union’s 2021-2027 budget would throw the bloc into a crisis, a senior EU official said on Monday as Budapest repeated it would bloc it unless a link between access to the money and the rule of law is removed. The senior EU official said there were talks behind the scenes under way already to resolve such a crisis, which would leave the 27 countries of the EU without a budget over the next 7 years and without a 750 billion euro economic recovery package. Ambassadors of EU countries in Brussels will vote on the budget this afternoon.