A group of migrants from Syria walk towards the border with Hungary, near the northern Serbian village of Martonos, near Kanjiza, on June 25, 2015.Hungary said it has indefinitely suspended the application of a key EU asylum rule in order “protect Hungarian interests”, prompting Brussels to seek immediate clarification. Illegal immigrants cross Serbia on their way to other European countries as it has land access to three members of the 28-nation bloc — Romania, Hungary and Croatia. AFP PHOTO / ANDREJ ISAKOVIC