Vesna Pejovic vowed to reduce gun violence in Montenegro after her daughter and two grandsons were killed in a mass shooting in the town of Cetinje in 2022. Then came news on Jan. 1 that drained what optimism she had left.

A brawl in a tavern had triggered another rampage across the country¡¯s picturesque old capital in which a gunman killed 13 people with an illegal firearm then shot himself.

¡°We had to relive all our horrors all over again,¡± said Pejovic, 63, who for three years has lobbied politicians to enact stricter gun controls in the small Balkan country.