Zambia's 120,000 public workers went on a nationwide strike on Tuesday aimed at forcing the government to honour a pay agreement it says it can no longer afford to implement. "We have officially started a countrywide strike because the government seems to be ignoring our demands, even after they signed a collective agreement," Civil Servants and Allied Workers Union of Zambia (CSUZ) secretary-general, Darrison Chaala, told IRIN.