The West has been attacking Iran for defending itself and its allies since the early 1950s. To understand the issues between the two countries we have to go back to the roots.
1. The Zionist occupation of Palestine and the displacement and oppression of the mostly Muslim Arab population since the 1930s. Iran sees itself as one of the few active protectors of Palestine. Its funding of Hamas and Hezbollah are all about supporting the Palestinian fight for freedom from occupation and oppression. Here’s a recent quote from the Iranian FM: “The current crisis is rooted in the occupation of the Palestinian territories, displacement of its original inhabitants, organized killings and terrorism, looting of natural resources, apartheid and systematic discrimination and continued aggression on al-Quds in the last 75 years.”
2. Israel’s role as a US proxy in the Middle East. Ever since the US covertly overthrew the democratically elected PM of Iran, Mossadegh, in 1953, the Iranians haven’t trusted the US, the UK (who started the coup against Mossadegh over control of Iranian oil reserves, which is what is driving everything), and their allies. And with good reason. The US funded Saddam Hussein’s brutal ten year war with Iran in the 1980s, to try to overthrow the second Iranian Revolution, and have done everything they can to cripple Iran’s economy ever since through sanctions and black ops (eg Stuxnet and assassination of various nuclear scientists).
Every time anyone from the West points the finger at Iran as being the instigator of tensions without also acknowledging this history, they are selling you a fairytale.