Land Mines Pose New Threat to Migrants Entering Croatia Listen Download Embed Share Share this on Facebook (Opens in a new window) Share this on Twitter (Opens in a new window) Share this via Email With the border between Serbia and Hungary now closed, officials in Croatia are now expecting that as many as 4,000 migrants might enter their country in the coming days. ( Bax Spirit / Shutterstock ) Produced by Ellen Frankman Produced by PRI and WNYC