In the capacity of the country's president, Sejdiu as Head of the Kosovo Negotiation Team, led successfully the Kosovar Delegation (the Unity Team) in the internationally facilitated negotiations for resolving the final status of the Kosova in Vienna. Also Sejdiu led Kosovo delegation on extra 120 days of talks with serbian delegation, mediated by envoys from the US, EU and Russia (Frank Wisner, Wolfgang Ischinger and Alexandar Botsan-Kharchenko). After this process of negotiations, Kosovo declared independence. Sejdiu participated in final drafting of text of Declaration of Independence of Kosovo, and also is the first to sign the Declaration of Independence.