European Union leaders and Pakistan's President Asif Ali Zardari are meeting to discuss efforts to fight terrorist groups and forge closer trade ties.
Wednesday's talks are the first-ever summit-level ones between the EU and Pakistan. The 27-nation EU wants to strengthen ties with Islamabad to address increased security concerns over the country.
The EU's foreign ministers earlier this week said Pakistan was of "strategic importance" to stability in the region. Pakistan is also seen as key to solving the war in neighboring Afghanistan.
Aid group Oxfam is calling on the EU to send more humanitarian aid to civilians fleeing the fighting in Pakistan's North West Frontier Province.
The EU is spending â‚¬200 million ($277 million) in aid between 2007 and 2010 to help Pakistan.