KARACHI - Muttahida Quami Movement (MQM) Quaid Altaf Hussain telephoned President Asif Ali Zardari on Monday and discussed important national issues while the overall situation of the country also came under discussion between the two leaders. They strongly condemned the attack of the NATO forces on border posts in Pakistan and paid tributes to the officers and men martyred in the attack. They asserted that Pakistan is an independent and sovereign country and US and NATO must show respect for the national security and sovereignty of the country. President Zardari lauded the 'Pakistan Solidarity and Stability Day being observed by the MQM and praised the hoisting of Pakistani flags on the day. He congratulated Altaf Hussain for observing the day. The President stressed upon the need of the same national spirit and unity in order to meet the challenges facing the country. Altaf Hussain said that the world should know that Pakistanis are a living nation and the attacks against national security and sovereignty will not be tolerated at any cost. He stated that the entire nation was standing behind its Armed Forces for defending the country. Political situation in the country was also discussed by the two leaders during the telephonic conversation.