(ANSA) - BELGRADE, MAR 12 - PSS, one of Slovenia's two police unions, went on strike on Thursday, with approximately 200 officers protesting in front of the Government Palace in Ljubljana, where the government was holding its regular weekly session. They want better working conditions, according to the Slovenian news agency STA. PSS representatives, who represent 5,000 of the country's 7,000 police officers, delivered a letter to Prime Minister Robert Golob outlining their strike demands. (ANSA).