The connection is about over agreeing on anti-Western ideology. Russia has an air protection system that could help Iran if it arrives less than attack from Israel. Israel also has experience of conducting strikes deep inside hostile territory. The shortest distance amongst Iran and Israel is about one,000km (620 miles). https://bookmarkspy.com/story19747308/the-smart-trick-of-israel-news-t%C3%BCrkei-that-no-one-is-discussing