Turkey has not received "concrete proposals" to address its concerns over Finland and Sweden's NATO, Turkish President Tayyip Erdogan said today.

Speaking in parliament, Mr Erdogan said Turkey wanted to see a "sincere" approach from the two Nordic countries regarding its concerns about their NATO bid, adding Ankara would not change its view unless it saw concrete and binding steps.

He also said Turkey's objection to Stockholm and Helsinki's membership bids was not "opportunism" but rather a matter of national security.

For context: Last month, Finland and Sweden formally submitted their applications to join NATO in a "historic moment" driven by security concerns over Russia's invasion of Ukraine.

The applications will now be considered by the 30 member countries of the military alliance.

However, Turkish President Recep Tayyip Erdogan has expressed reservations about the two nations joining.

The Turkish government is pushing for long-sought demands that Sweden - and to a lesser extent Finland - crack down on entities that Ankara claims are linked to the Kurdistan Workers' Party, or PKK, which is considered a terrorist organisation in Turkey.