Turkish President Recep Tayyip Erdogan said that Ankara has not received any answers to its demands from Sweden and Finland.
The NATO summit, which will be held in Madrid at the end of June, is not the deadline for making a decision on Sweden's and Finland's candidacies for membership, which Turkey opposes, said on June 4 the spokesman of the Turkish president.
Sweden and Finland applied to join the Western alliance last month in response to Russia's invasion of Ukraine, but their bids have been resisted by Turkey, which has accused them of supporting Kurdish militants.
While the two Nordic countries said talks to resolve the dispute would continue, Erdogan said on June 1 that Ankara had not received any answers to its demands, including an end to support for groups Turkey considers terrorists, the lifting of an arms embargo on Ankara and the extradition of suspects.
Erdogan's spokesman and chief foreign policy adviser Ibrahim Kalin reiterated on June 4 that the membership bid depends on how Sweden and Finland respond to Turkey's demands.
Kalin said the upcoming NATO summit in Madrid is important to address common issues such as Russia's invasion of Ukraine and cooperation within the alliance, but that potential allies must take steps to ease the concerns of current members.
"We don't think we are under any time pressure to do it before the NATO summit. It is important that Sweden and Finland openly, clearly and concretely state what steps they will take in relation to the fight against terrorism," he added.
For any country to join NATO, the support of all 30 members is required.
NATO Secretary General Jens Stoltenberg said during a visit to Washington this week that he would invite senior officials from Finland, Sweden and Turkey to Brussels in the coming days to discuss outstanding issues.
NATO leaders will meet from June 29 to 30 in Madrid.
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