Finland and Sweden formally applied to join NATO last May but Türkiye, a longstanding NATO member, asked the two Nordic states to take concrete action against terror groups like the PKK and FETO.
Ulf Kristersson says Sweden is 'prepared for what we will do if that were to happen'.
Foreign Ministry issues travel warnings for US and some European countries, citing surge in anti-foreigner and racist attacks and growing religious intolerance.
Foreign Ministry spokeswoman says the burning was assessed as absolutely inadequate while the Western world "applauds this and says that this is not just normal, but good."
Türkiye issues a stern warning to European countries who disregard acts of sacrilege against Islam's holy book, the Quran, saying "such heinous acts" threaten the practice of peaceful coexistence.
The toxic mix of far-right nationalists and PKK terror supporters is sowing seeds of hatred in Europe against both Muslims and Türkiye. And Sweden is sitting on a powder keg.
In a recent provocative act against Ankara, Rasmus Paludan, a controversial Danish far-right politician, was allowed to burn a copy of the Quran in front of the Turkish Embassy in the Swedish capital.
Accompanied by police, supporters of the PKK/YPG terror group marched to the Medborgarplatsen area in Stockholm.
Turkish Foreign Ministry says permitting the anti-Islam act of Rasmus Paludan under the guise of "freedom of expression" is completely unacceptable.
Permission Sweden gave for Quran burning is not freedom of expression, Türkiye's Foreign Minister Cavusoglu says, adding racism and hate crimes are not freedom of thought.
Supporters of the wanted terror group PKK/YPG in Sweden are accused of defaming and threatening the life of Turkish President Recep Tayyip Erdogan during a protest in Stockholm last week.
Sweden "has a responsibility" to take action over Thursday's incident that took place right in the centre of the Nordic country's capital Stockholm, says Turkish Foreign Minister Mevlut Cavusoglu.
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