 Complete the following phrase:  Having left the Italian Parliament following the 1996 general election, Rocchetta, while continuing to be an active spokesman for Venetian nationalism, focused on pacifism and antimilitarism. In particular, in 1999 he went to Belgrade for what he described as a mission of peace, along with some left-wing pacifists, notably including Luca Casarini, Gianfranco Bettin and Vitaliano Della Sala. With his Center for International Studies dedicated to Paolo Sarpi, Rocchetta organised several initiatives with representatives of minorities, notably including those with Ibrahim Rugova in favour of a peaceful resolution of the 