A Germanophile and a Russophobe, Carp gathered consensus for steering the Kingdom of Romania into the Triple Alliance, but his external policy became entirely unpopular by the start of World War I. During that time, he was the only prominent public figure to demand a declaration of war against the Entente Powers. He came out of retirement during the German occupation of Romania, when he inspired fellow Conservative Lupu Kostaki to set up a collaborationist territorial government. This final project caused his fall into disgrace once the legitimate government regained control.