Belarusian opposition leader Sviatlana Tsikhanouskaya called on the international community on Friday to do more to help political prisoners in her country. “We have to take measures to prevent further tragedies. The torture of people in prison must stop,” she said in Vilnius, the Baltic News Service (BNS) reported. Her remarks followed the death in custody of Russian opposition leader Alexei Navalny last month. According to Tsikhanouskaya, who lives in exile, five political prisoners have died in Belarusian jails in recent years. She predicted the figure would rise. “People in prisons are bei…