It seems that Turkey is joined by Croatia, which opposes Sweden and Finland's membership in NATO.
Croatian President Zoran Milanovic has deep-rooted agreements with Prime Minister Andrej Plenkovic on a number of issues, including whether or not Sweden and Finland's application for membership in the alliance should be upheld.
Before the Croatian parliament ratifies NATO membership for the two Nordic countries, President Milanovic wants an amendment to neighboring Bosnia's election law that would make it easier for Bosnian Croats to elect their representatives to leadership positions.
Turkish President Recep Tayyip Erdogan reiterated on Wednesday that NATO enlargement will depend on Finland and Sweden respecting Turkish concerns about terrorism. On Wednesday, President Joe Biden called Finland and Sweden's decision to seek NATO membership "historic" and said he would "strongly support" the applications.
Mr Biden will meet in Washington on Thursday with Finnish President Sauli Niinisto and Swedish Prime Minister Magdalena Andersson to discuss their NATO aspirations and the situation in Ukraine.
"Finland and Sweden have long been stable partners of the United States," Biden said in a statement. "By joining NATO, these countries will further strengthen our defense cooperation and benefit the Transatlantic Alliance." VOA