Chloe Marshall-Denton, PhD, Humanitarian Advisor, Medecins sans frontieres (MSF) Belgium; and Andrea Panico, Humanitarian Affairs Officer, MSF North Balkans mission / November 2023 On 16 March 2023, EU Commissioner Ylva Johanson and European Border and Coast Guard Agency (Frontex) Director Hans Leijtens were pictured at the Serbian-Hungarian border with Frontex officers and Serbian authorities. The high-profile visit to Serbia, a non-EU country neighbouring Hungary, Croatia, and Romania, marked an important shift: Frontex, which had previously withdrawn from the Hungarian side of the border, is rapidly expanding its presence across non-EU Balkan states, including Serbia. By April 2023, 140 Frontex officers had reportedly been deployed to Serbia; their presence shared between the southern border with…