Prime Minister Syed Yousuf Raza Gilani on Thursday called on President Asif Ali Zardari here at President House, report said. The two leaders discussed the overall security situation of the country in the wake of recent terrorist attacks, Waziristan operation and Kerry-Lugar act of US Congress in their meeting. The PM and President also discussed the agenda of the forthcoming meeting between Pakistan Muslim League-Nawazs chief, Mian Muhammad Nawaz Sharif and the President, scheduled to be held on the sidelines of a dinner to be hosted by former premier earlier next week.