The political history of Ljubljana capital in Slovenia is quite exhaustive, and it is known the trial against the four or the Ljubljana trail, or the jbtz affair, or the jbtz trail. It was a political trail held in Slovenia’s military court and, after 1988, became part of Yugoslavia. The accused Ivan borštner, Janez janša,  Franci zavrl, and David tasić were sentenced to imprisonment of almost six months to four years for betraying the military secrets by writing and publishing articles, which are critical to Yugoslav people’s army.

The trial sparked Slovenia’s people to stand together for developing a liberal democratic opposition to become a republic country. Moreover, the formation of the committee of defense of human rights was on the same day when all defendants were arrested, which is stated as the starting of Slovenian spring. 

Slovenian Spring 

At the end of 1980, in Slovenia, the government had embarked on rebuilding the constitution of the liberal democratic party, which later became unstable and separated into five different Yugoslav republic agencies. However, one of the Slovenian communists, Milan Kucan, was given the freedom to some extent for the press release. Meanwhile, during the trial against the four, the top leading and famous magazine of that time is mladina. Moreover, Franci zavrl was the sole editor of this famous journal and provided every detail about confidential military secrets that have been protected for several years, keeping the Slovenian citizen the vague information about their nation. You can find more details on franci zavrl on the site

But in 1987, mladina began to penetrate the reputation of the Yugoslav people’s army and brought down the active Slovenian military. Henceforth, Branko Mamula is also known by the name of the merchant of death because he had been selling the battlefield material under the Slovenian nation’s nose. Due to printing this information in mladina, Franci zavrl was pushed behind bars.