Bulgaria will not be part of a military intervention targeting the Islamic State (IS) group, Prime Minister Boyko Borisov has asserted.

In his words at the opening of a swimming pool on Thursday, "when you send airplanes and missiles to the other side, you cannot expect peace from the other side."

"We have to revise our conduct, by "ours" I mean the EU, NATO, if our foreign policy is adequate and if what we have done has brought about the results expected."

"I have always declared we are a country that does not fight wars and insist that these problems should be solved through diplomatic means," public broadcaster BNR quotes him as saying when asked whether Bulgaria could have some commitment to a prospective operation against IS.

Talk about a possible intervention in Syria has gathered pace after IS claimed responsibility for last week's deadly attacks in Paris.

However, Bulgaria is adamant it will not take part if an operation begins, with Foreign Minister Daniel Mitov suggesting Gulf states should commit themselves to a ground offensive instead of Western European countries.