Clue: Podgorica once got over opening harangue, for the most part (8)
Answer: TITOGRAD
Explanation: Definition: Podgorica once
An envelope ('opening') of TOG, a reversal ('over') of 'got' in TIRAD[e] ('harangue') minus the last letter ('for the most part'). Podgorica is the capital city of Montenegro, and was once called Titograd, after the Yugoslav leader.