epa01762044 Nobel Peace Prize laureate and former United Nations envoy for Kosovo Martti Ahtisaari addresses a news conference in Pristina, Kosovo, 15 June 2009. Martti Ahtisaari is visiting Kosovo to participate in celebrations of the first anniversary of the constitution. Kosovo unilaterally declared independence from Serbia in February 2008 and adopted a constitution in June. EPA/VALDRIN XHEMAJ