Held without the participation of key neighbouring countries, the event was a thinly disguised bid to restore the regime's legitimacy, experts said.
With the Supreme Leader's help, the IRGC has exercised increasing control over Iran's military, economy, domestic and foreign politics.
The Iranian regime has said it is prepared to collaborate with China and Russia to develop a COVID-19 vaccine, but Iranian health experts remain sceptical.
Moscow's opposition to the extension of the UN arms embargo on Iran risks bringing sanctions to Russia and damaging Russian interests in the Middle East, analysts say.
An interview with a Mahan Air pilot carrying Qassem Soleimani aboard his flight in 2013 has once again drawn attention to the IRGC's destabilising actions in the region.
Undermining governments, fomenting unrest, spreading disinformation and supporting the indiscriminate killing of innocents around the world are the unfortunate hallmarks of the Kremlin.
Qaani has played a major role in feeding wars and crises in the Middle East. But it will be difficult for him to emulate his predecessor's charismatic leadership.
A growing number of countries are suggesting the crash of a Ukrainian airliner outside Tehran was caused by an accidental missile strike.
The Iran-backed militia will suffer a setback with the loss of the IRGC Quds Force commander, who had supplied it with arms and training.
If Abu Bakr al-Baghdadi's successor is to avoid an internal leadership challenge, he will be forced to step out of the shadows, experts say.