In his first comment on the issue, posted on his official Twitter account, Pahor said that the deal, even if non-binding, was the first serious attempt by the international community to deal with migrations in a coordinated fashion.

Even though the document is not clear enough for Slovenia on some points, such as separating between refugee and migrant statuses, it is good in principle that a joint international approach to migrations is formed at last, he said.

"We experienced ourselves a few years ago what it means for countries to be left to their own devices in case of mass migrations," he said, referring to the massive migration wave passing through the country in 2015 and 2016.

Slovenia is a sovereign country and is forming a position on the issue in a sovereign way, he said, adding that Slovenia was perfectly capable of controlling its borders and preventing illegal migration.

"However, I believe it necessary to form a joint policy at last at the EU level and guiding principles at least at the international level," Pahor said in his post.

The issue has been raising controversy in Slovenia with the right-wing opposition parties urging for the country to follow suit of several other countries which have opted out of the deal.

Foreign Minister Miro Cerar announced today that the government would discuss the matter on Thursday. Even if his cabinet supported the deal, he believes it is right for the new government to review the position.

The head of the parliamentary Foreign Policy Committee, Jožef Horvat (NSi) said the government could take its position only after the emergency session of parliament on the issue planned for next Wednesday.