“The policy of Moscow and Beijing, which consisted of fairly mild condemnations of the Israeli and US strikes in Iran, sparked criticism and disappointment in Tehran," a research paper from the Institute of National Security Studies (INSS) said.
“It also reinforced the Iranian assessment that its reliance on Russia and China remains limited, particularly in the event of a military confrontation with Israel and the United States," the report by Danny Citrinowicz and Raz Zimmt added.
The 12-day war, initiated by a surprise campaign of Israeli strikes and assassinations on June 13 which killed senior military figures and nuclear experts, saw Iran fighting both Israel and the US, while China and Russia resisted involvement.
The US struck Iran's three biggest nuclear facilities while Israel took control of Iran's aerial defense systems and destroyed swathes of military and nuclear infrastructure, along with civilian sites such as Evin Prison, leaving its foe much weakened.
Israel too suffered major blows with Iranian missile barrages which struck military and civilian infrastructure.
“It is clear that for now, Iran has no viable alternative to continuing its political, economic, and security partnership, as limited as it may be, with Russia and China, especially given the escalating tensions between Tehran and Europe,” the paper said, referring to the imminent due by the end of the month from Britain, France and Germany.