Trump Iran business ( several deals including a Bank and WMD electronics )

 https://publicintegrity.org/politics/trumps-organization-did-business-with-iranian-bank-later-linked-to-terrorism/

https://www.newyorker.com/news/news-desk/the-iran-business-ties-trump-didnt-disclose

https://www.pbs.org/newshour/politics/trump-okd-business-partner-with-alleged-iran-laundering-ties