STORY: Finland and Sweden asked to join NATO last year in response to Russia's invasion of Ukraine. But the process has been held up by Turkey and Hungary. The parliaments of all NATO members must ratify newcomers.

The Turkish parliament was the last among the 30 members of the alliance to ratify Finland's membership after Hungary's legislature approved a similar bill earlier this week.

Turkey is still holding off approving the membership bid of Finland's neighbour Sweden, which Ankara says has not gone far enough in cracking down on people Turkey considers terrorists. The three countries signed a pact on the issue last year.