But the Croatian Army reconquered almost all of the Serb-held areas in two offensives last summer.

The Croatian refugees passed through Serb-held areas to reach Kiseljak.

Bihac is strategically crucial because it borders Serb-held areas of Croatia.

They have begun a guerrilla war in Serb-held areas that won't be readily suppressed.

Across the border, in a Serb-held area of Croatia, a radar system began monitoring air activity over Bosnia.

But it was clear that Croatia had embarked on its largest military operation since attacks on other Serb-held areas in 1993.

The last two Croatian attacks on Serb-held areas occurred in 1993.

Others remain at large in Serbia or in Serb-held areas of Bosnia.

Croatian officials have repeatedly warned that Zagreb will use force if necessary to retake Serb-held areas.

At the same time, some quite encouraging new developments are also observable in the Serb-held areas of Bosnia-Herzegovina.