Chief of Army Staff General Ashfaq Pervez Kayani on Wednesday separately called on President Asif Ali Zardari and Prime Minister Syed Yousuf Raza Gilani and discussed with the issues of national interest, report said. Besides discussing the issues pertaining to law and order in the country, the political and military leadership exchanged views over the professional matters of the army, the ongoing military operation in the South Waziristan tribal region and the ongoing rescue operation in Hunza area.