Iran has a goal to support Palestinians? you mean you actually believe they care about their well being? you cant be serious.
You really got no clue and knowledge about Iran. Are you even aware that the Iranian constitution provides for a permanent Jewish representative in their parliament who at the same time heads a ministry? That there are around 10,000 unmolested Iranian Jews living in Iran who have their own Synagogues?
Is there a Palestinian in Israel that heads a ministry? are Palestinians living unmolested in the West-bank and Gaza?
Iranians can very well distinguish between a Jewish person and a Zionist. You obviously cant.
If as an example: Iran would manage to establish a Palestinian State, would then according to your opinion, Iranians or Palestinians be living in that State? Iran has absolutely no interest nor ever proclaimed of wanting to occupy other countries.
If you would know what Israel (Mossad), the IDF and the USA have done and are doing to Iran since 1953, then you would understand as to where the call to "wipe out the Zionist entity" and "death to America" has it's roots. Are you aware that from 1947 to 1953 Iran never participated in attacking Israel? Iran was factually the 2nd Muslim Nation after Turkey to acknowledge the State of Israel in 1948.
It was Israels action towards inciting the USA to be against the Islamic Republic of Iran, and it's suppression of Palestinians since 1948 - that resulted in the Islamic Republic of Iran backing anti-Israel and pro-Palestinian organizations. Upon Israels attack onto Lebanon and the PLO in 1982 - Iran went active and started turning these organizations into their proxies. Just as Israel
prior had turned factions in Lebanon into their proxies until today.
Whilst at the same time Israel was providing limited, covert military support to Iran - to fight off the Iraqi invaders - since they viewed Iraq as the greater danger to Israel - whilst the USA was providing support to Iraq to hammer Iran. !!!
You start to get an understanding as to how complex Israels/US and Iran's relationship is?? The world is not back & white, it has always been grey.