In 1913, Iorga was in London for an International Congress of History, presenting a proposal for a new approach to medievalism and a paper discussing the sociocultural effects of the fall of Constantinople on Moldavia and Wallachia. He was later in the Kingdom of Serbia, invited by the Belgrade Academy and presenting dissertations on Romania–Serbia relations and the Ottoman decline. Iorga was even called under arms in the Second Balkan War, during which Romania fought alongside Serbia and against the Kingdom of Bulgaria. The subsequent taking of Southern Dobruja, supported by Maiorescu and the Conservatives, was seen by Iorga as callous and imperialistic.