from satellite photos. Clearly some fireworks are decoy missiles used for collecting Israel air defense information. The bottom line is it's unlikely Israel and Iran directly have a war because
1. The two countries are 1000 miles away, separated by a few countries. How can they fight ground war? Air attacks to each other are possible.
2. Iran's proxy wars against Israel have been going so well. Iran definitely has no desire to fight Israel directly. Israel is in disadvantage position, couldn't figure out an effective way to counter proxy war strategy. So Israel wants to fight Iran directly more than Iran wants to fight Israel directly from that perspective. But overall neither country really want to fight directly given the geographic difficulty.
3. Qasem Soleimani is brilliant strategist, perhaps the best strategist so far in 21th century. Name others if you don't think so. He created and implanted the strategy that made Iran being a country that attacks anyone through proxies but no one can attack them directly. When Israel/US realized how dangerous he was and killed him, it was too late. Iran' proxy war againsy Israel was already well established based on his strategy. Clearly Iran will continue his strategy. Israel and US so far have no effective strategy to against it.
In the end, it's our stupid Iraq war that made Soleimani's strategy become possible and successful. We lost Saddam to contain Iran. Iraq is Shiite majority country, but Saddam is Sunni. Post-Saddam Iraq is very friendly to Iran, as we see this time Iraq allows Iran's missiles fly over without intercepting them.