Could Iran launch 600 missiles and drones on Israel?

Iran has threatened a severe attack on Israel in retaliation for the assassination of the Hamas leader in Tehran last week. Bizarrely, Iranian leaders have been getting calls from Washington and probably from European capitals asking Tehran to keep the planned retaliation to a minimum to avoid an all-out war in the Middle East. In other words, it is accepted that Iran WILL attack Israel but the hope is that it will be small-scale. What a world we live in. The last and first time Iran attacked Israel, on April 13, they fired 300 ballistic missiles and drones. I guess, having warned of a severe response, Tehran will want to do more than 300. Will they go double and launch 600 missiles and drones? This seems highly likely. How many of them get through Israel's Iron Dome defence system and past the US Navy's Standard anti-ballistic missile systems on board cruisers, destroyers and one carrier in the area, will be crucial. If even 20 per cent or ten per cent get through and hit targets, it could persuade Israel to respond and start hitting Iran. Then, we will be in a far more dangerous ball game. The war that no one wants could then unfold very rapidly.