Popović is a long-time eurosceptic. In an interview with "Večernje novosti" on January 24, 2017, Popović stated that he was against the Brussels Agreement. He suggested that even the termination of the Brussels Agreement should not mean an end to diplomatic relations with the European Union, but that Serbia in that case should still abstain from EU membership. During a visit in Smederevo during his presidential campaign, Popović told the press that the European Union would try to prevent Chinese investments into the Serbian metallurgical industry.