Serbia's president is visiting Croatia amid protests and surging tensions in relations between the two Balkan rivals stemming from the 1990s war that followed the breakup of Yugoslavia.

Aleksandar Vucic arrived Monday for a two-day visit seen as an attempt to solve some of the open issues and boost economic ties despite the divisions.

Several hundred war veterans and nationalists protested against Vucic, a former fervent nationalist from the war era who now says he is a pro-EU reformer.

Vucic is meeting top Croatian officials, minority Serb representatives and religious leaders.

The visit was planned for last year but canceled amid a diplomatic row when Croatia protested a Serbian exhibition about a World War II concentration camp in Croatia where tens of thousands were killed by a pro-Nazi puppet regime.