ZAGREB, Yugoslavia — Rebellious Serbs erected roadblocks around towns in the republic of Croatia on Tuesday, sharpening the crisis between Yugoslavia's two biggest ethnic groups that has raised the specter of civil war.
As tension mounted after Sunday's bloody shoot-out between Serbs and Croatian police in the resort of Plitvice, Croatia's nationalist leaders vowed not to cede any territory to their rivals.
"We won't let a single inch of Croatian land be taken from Croatia," the republic's president, Franjo Tudjman, said in a speech in Zagreb, the Croatian capital.
"Croatia is ready to defend itself with all means," the republic's interior minister, Josip Boljkovac, told reporters.
The two men were reacting to a declaration by Serbian leaders in Croatia's Krajina region that they seek to unify the area with Serbia.