The EU failed on Sunday to agree on an embargo of Russian oil, but diplomats but will still try to make progress ahead of a Monday-Tuesday summit on an exemption for pipeline deliveries to landlocked Central European countries, officials said, writes CNBC.

However, a senior EU diplomat said there was “still too much detail to sort out” to hope for an agreement before European Union leaders gather in Brussels on Monday afternoon.

The proposed sanctions on oil imports is part of the European Union’s sixth sanctions package on Russia over its invasion of Ukraine.

The whole package has been held up by Hungary, which says an oil embargo would be a body blow to its economy because it cannot easily get oil from elsewhere. Slovakia and the Czech Republic have expressed similar concerns.

Talks on the oil embargo have been going on for a month with no progress and leaders had been keen to reach an agreement for their summit to avoid looking disunited in their response to Moscow.