Kosovo Prime Minister Albin Kurti said on Tuesday that Serbian President Aleksandar Vucic declined a generous offer of self-management for Kosovo Serbs.

“After refusing to sign the February 27 Agreement and before refusing again to sign in with the March 18 Annex, Serbia’s President declined my generous offer of self-management for Kosovo Serbs, in an association that I’d draft and propose. Is he Dr. No or Mr. Nyet? Well, we know he’s not a doctor,” Kurti wrote in a Twitter post.