The prospect of EU membership has for years been the main driver of reform in the Balkans after a decade of war and upheaval in the 1990s.
Borut Pahor, who is known as "Barbie" and along with Melania Trump is Slovenia's other former fashion model.
Asked about Russia's role in the region, Mogherini replied: "The Balkans can easily become one of the chessboards where the big power game can be played.
Under the new law, same-sex couples can go on sick leave if their partner is sick and inherit property and receive a widow's pension if their partner dies.
President Vladimir Putin thanked Slovenia for offering to host his first meeting with US President Donald Trump, but added that the prospect hinges on Washington.
Slovenia is undergoing a tourism boom partly because it is the native country of US first lady Melania Trump.
The ethnic Serb minority in Bosnia and Herzegovina has celebrated a deeply divisive holiday, marking a date that reminds the country’s Muslims and Croats of the brutal 1990s war.
The European Commission gave a green light today three more months of Schengen border controls at 5 specific passages.