This Investors Business Daily editorial points out why Israel is sure Iranian military advisors are helping Hezbollah, despite Tehran’s denials. It has to do with the INS Spear, a destroyer, being hit by a shore-to-ship C-802 missile recently:
If there was any doubt about Iran’s direct involvement in the attacks on Israel, it was removed when an Iranian-made radar guided C-802 missile, not an unmanned drone as widely reported, struck and severely damaged an Israeli warship on patrol off the coast of Lebanon.
The C-802 is a sophisticated weapon requiring special training. It is quite different from the short-range and inaccurate Katyushas first used in World War II by the Soviets.
C-802s require not only special training but also special approval to launch. That order comes from Tehran.
Iran denies the presence of personnel in Lebanon.