THE BOSNIA DILEMMA : Seeking Safety in Bosnia

Serbs stepped up their attack on Gorazde this week, fueling concern over the future of the other five U.N.-designated safe areas in Bosnia-Herzegovina.

The Safe Areas

Sarajevo

* The multiethnic capital in east-central Bosnia.

* Prewar population: 526,000

* Current population: 380,000

* Fed mostly by airlift throughout the war. Airlift and all other U.N. flights now stopped amid rising tensions with Serbs following NATO air strikes around Gorazde on April 10 and 11.

Gorazde

* Mostly Muslim district.

* Prewar population: 37,000

* Current population: 65,000 (mostly refugees fleeing Serbian offensives)

* More than 300 dead and more than 1,100 injured in fierce fighting over the last three weeks.

Bihac

* The mainly Muslim city in northwest Bosnia.

* Prewar population: 71,000

* Current population: 300,000

* Enclave surrounded by Croats and Serbs.

Tuzia

* Industrial city 45 miles north of Sarajevo.

* Prewar population: 132,000

* More than 60,000 refugees have since poured in, mostly Muslims fleeing Serbs in eastern Bosnia.

Srebrenica

* Mainly Muslim town.

* Prewar population: 30,000

* Current population: 70,000

* Food mostly comes in by land convoys.

Zepa

* Mountain enclave 30 miles east of Sarajevo.

* Prewar population: 6,000 (mainly Muslims)

* Current population: 40,000 including 8,000 children