Keep in mind that this is not a situation of simply Israel making allegations.  Lebanon would only stop flights if it is actually finding the cash.  “Lebanon bars Iran airlines after Israel alleges Hezbollah cash smuggling,” Iran International, 2-13-25.  Notice this quote also.  “Iranian envoys have been flying into Beirut from Tehran with suitcases stuffed with US dollars to finance Hezbollah’s operations. Additionally, Israel has reported that Turkish nationals have been used as couriers to transport funds from Istanbul to Beirut, the report said.”

“Iran is rearming its missile program and a ship of supplies just arrived from China, Western sources say,” CNN, 2-13-25.