The Nordic countries may join the Bucharest Nine group of former Soviet or Warsaw Pact countries to form a Nato eastern flank bloc, reports the Finnish News Agency.Romanian President Nicusor Dan with Finland's Alexander Stubb at the summit of the Bucharest Nine (B9) and the Nordic countries at the Cotroceni Palace in Bucharest. Image: Mihai Barbu / AFPYle NewsSTT14.5. 11:07Finnish President Alexander Stubb stressed the importance of Nato unity at the Bucharest Nine (B9) summit in Romania.Leaders of the Nordic countries and others on Nato's eastern flank met with Ukraine's president Volodymyr Zelensky, Nato Secretary General Mark Rutte and US Under Secretary of State for Arms Control and International Security Thomas DiNanno in Bucharest on Wednesday.In a post on X on Wednesday evening, Stubb said that the meeting was a "good discussion in preparation for the Nato Summit in Ankara," scheduled for early July.The Finnish president tweeted in English that it was "as always, good to talk with Zelensky…We discussed strengthening the European security together. The President also gave me an update on the situation in the front lines and the peace efforts".In a separate X post in Finnish and Swedish, Stubb added that in his speech at the meeting he had "emphasised Ukraine's role as a provider of security in Europe. Russia, on the other hand, remains a long-term security threat to both Europe and the Alliance. We must be able to see through the noise and strengthen Nato's unity," he posted.The Bucharest Nine (B9) group was formed in 2015, just after Russia’s illegal annexation of Crimea. Its members are former Soviet or Warsaw Pact countries that are now members of Nato and the EU.The event in Bucharest was co-hosted by Romanian President Nicusor Dan and Polish President Karol Nawrocki, who said that the Nordic and B9 countries are together "building a common security architecture from the Arctic Ocean to the Black Sea".The Nordics have joined B9 meetings since last year, and may be considering joining the B9 group permanently, according to the Finnish News Agency STT.Lithuanian President Gitanas Nausėda met with Stubb in Helsinki last September. Image: Mikko Ahmajärvi / YleOn Thursday, Stubb began a two-day state visit to Lithuania. Along with meetings with Lithuanian leaders and business executives in the capital Vilnius, he is to visit the Padvarionys Frontier Station on the border with Belarus with Lithuanian President Gitanas Nausėda.Joining Stubb on the trip is his wife, Suzanne Innes-Stubb, as well as Minister for Foreign Trade and Development Ville Tavio (Finns) and a business delegation.