There is a great responsibility on the side of Azerbaijan, which launched this military operation against Nagorno-Karabakh, Charles Michel, president of the European Council, has said   

"It’s now up to Azerbaijan to show goodwill by engaging while respecting international law to protect the rights and security of the entire population that lives in Azerbaijan, including the Armenian population," said Michel, referring to the comment that Brussels' relationship with Baku remains difficult but promising.

He also said that Baku remains an EU partner despite its brazen attack.

"Azerbaijan is a partner today, yes, it’s a partner. That doesn’t mean the relationship is simple. No, it’s not simple. Are there difficulties? Yes, and these difficulties are real and should be understood," he explained.

When asked if the EU should reconsider its gas deal with Baku, Michel said: "Of course. What we now need to look at is how to normalise the relationship between Armenia and Azerbaijan so that we can firmly and incontestably ensure the mutual recognition of the territorial integrity of both countries."