In a high-profile trial in Oslo, two sisters from Bærum, Norway, face serious charges of participating in the terrorist organization IS.

The prosecution has requested a four-year prison sentence for the elder sister and two years for the younger, with one year suspended.

The sisters are accused of voluntarily traveling to Syria to support IS, marrying IS fighters, and attempting to recruit others.

The elder sister is alleged to have played a significant role in enforcing IS rules in refugee camps, while the younger sister's age at the time of the alleged crimes is considered a mitigating factor.

Both sisters deny the charges, claiming they went to Syria for humanitarian work.

The case highlights the complexities of prosecuting alleged IS affiliates and the challenges of proving intent and participation in terrorist activities.