From March 31, there are no more air and sea border controls for these two countries. Land borders will be subject to further negotiation.
Croatia, which entered the EU after Romania (19 million inhabitants) and Bulgaria (6.5 million), members since 2007, beat them to the punch in January 2023. With this double entry, this zone created in 1985 will now include 29 members: 25 of the 27 states of the European Union as well as their associated neighbors which are Switzerland, Liechtenstein, Norway and Iceland.