Jovović was born in Kosić near Danilovgrad in today's Montenegro. During World War II, he initially fought for the Yugoslav Partisans and then the Chetniks, as a member of the Bjelopavlić Chetnik brigade. At the time when World War II started, he was serving in Strumica, near the Yugoslav border with Greece. When war broke out, Jovović reportedly came back to his birthplace, Kosić in Bjelopavlići. In July 1941, he took part in an antifascist uprising against Italy and later participated in the battle of Pljevlja as a member of the Partisans. He later switched allegiances and fought for the Chetniks, under the command of Bajo Stanišić. In September 1944, he was part of the delegation led by Dušan Vlahović and Jakov Jovović, that was sent from Kotor across the Adriatic Sea to Taranto to negotiate with the British. There they were informed about the Allied change of support in favor of Partisans as a result of the Tehran Conference and they stayed in Italy until the remainder of the war. Jovović spent his time in Italy in several refugee camps. For a brief period, he worked in the Secret Intelligence Service of Britain. On one such occasion, he met Randolph Churchill, of whom he reportedly did not hold a very high opinion. In 1948, Jovović emigrated to Argentina with the help of Jakov Jovović, a naval officer of the Kingdom of Yugoslavia.