Israeli strikes blinded some of Iran's top air defenses like the Russian-made S-300 system seen here at a 2019 military parade.AFP via Getty ImagesIsrael's latest airstrikes on Iran appear to have battered Tehran's most advanced air defenses.Russia has been slow to provide Iran with more advanced systems.Russian requirements for its Ukraine invasion make an imminent provision to Iran unlikely.Iran has acquired and developed some advanced air defenses in recent years.