In this Saturday, March 23, 2019 file photo, a man holds a banner during a protest against President Milo Djukanovic in Montenegro's capital Podgorica. Montenegro's president says the upcoming parliamentary vote is crucial in the defense of the small Balkan country's independence in the face of renewed attempts from Serbia and Russia to install their nationalist and anti-Western allies to power. (AP Photo/Risto Bozovic, File)

An opposition supporter waves an old Serbian flag during church-led protest in front of the Serbian Orthodox Church of Christ's Resurrection in Podgorica, Montenegro, Thursday, Aug. 27, 2020. Montenegro is holding a parliamentary election this weekend with the pro-Western government facing pressure over the new coronavirus outbreak and ongoing tensions in relations with Serbia and the Serbian Orthodox Church because of a religious property law. (AP Photo/Risto Bozovic)

An opposition supporter holds a cross during church-led protest in Podgorica, Montenegro, Thursday, Aug. 27, 2020. Montenegro is holding a parliamentary election this weekend with the pro-Western government facing pressure over the new coronavirus outbreak and ongoing tensions in relations with Serbia and the Serbian Orthodox Church because of a religious property law. (AP Photo/Risto Bozovic)

Police officers, right, watch opposition supporters wave Serbian flags during church-led protest in Podgorica, Montenegro, Thursday, Aug. 27, 2020. Montenegro is holding a parliamentary election this weekend with the pro-Western government facing pressure over the new coronavirus outbreak and ongoing tensions in relations with Serbia and the Serbian Orthodox Church because of a religious property law. (AP Photo/Risto Bozovic)

Supporters of Democratic Party of Socialists wave Montenegrin flags as they drive in front of the Serbian Orthodox Church of Christ's Resurrection in Podgorica, Montenegro, Thursday, Aug. 27, 2020. Montenegro is holding a parliamentary election this weekend with the pro-Western government facing pressure over the new coronavirus outbreak and ongoing tensions in relations with Serbia and the Serbian Orthodox Church because of a religious property law. (AP Photo/Risto Bozovic)

Police officers watch opposition supporters during church-led protest in Podgorica, Montenegro, Thursday, Aug. 27, 2020. Montenegro is holding a parliamentary election this weekend with the pro-Western government facing pressure over the new coronavirus outbreak and ongoing tensions in relations with Serbia and the Serbian Orthodox Church because of a religious property law. (AP Photo/Risto Bozovic)

In this photo taken Monday, Feb. 17, 2020, a couple waits at a bus station by graffiti that shows Serbian flag, left, Montenegrin war flag, center, and old Montenegro flag, right, in Belgrade, Serbia. Montenegro's President Milo Djukanovic says the upcoming parliamentary vote is crucial in the defense of the small Balkan country's independence in the face of renewed attempts from Serbia and Russia to install their nationalist and anti-Western allies to power. (AP Photo/Darko Vojinovic)

FILE - In this Thursday, April 4, 2019 file photo, Montenegro President Milo Djukanovic speaks and gestures during an interview to The Associated Press in Montenegro's capital Podgorica. Montenegro's president says the upcoming parliamentary vote is crucial in the defense of the small Balkan country's independence in the face of renewed attempts from Serbia and Russia to install their nationalist and anti-Western allies to power. (AP Photo/Risto Bozovic, File)

FILE - In this Monday, Oct. 17, 2016 file photo, a supporter of long-ruling Democratic Party of Socialists leader Milo Djukanovic holds his portrait during celebration after parliamentary elections, in Podgorica, Montenegro. Montenegro's President Milo Djukanovic says the upcoming parliamentary vote is crucial in the defense of the small Balkan country's independence in the face of renewed attempts from Serbia and Russia to install their nationalist and anti-Western allies to power. (AP Photo/Darko Vojinovic, File)

FILE - In this Monday, Oct. 17, 2016 file photo, long-ruling Democratic Party of Socialists leader Milo Djukanovic, gives a thumbs up in his headquarter, in Podgorica, Montenegro. Montenegro's President Milo Djukanovic says the upcoming parliamentary vote is crucial in the defense of the small Balkan country's independence in the face of renewed attempts from Serbia and Russia to install their nationalist and anti-Western allies to power. (AP Photo/Darko Vojinovic, File)