I’ll believe Israel is serious when they follow it up with a 12 hour artillery barrage.
Israel is not serious, but every little step towards that helps. Serious is a huge build-up to the North, in Ashkelon or Sderot, which concentrates all their defenses, human shields, amo depots in hospitals, schools and mosques, etc., in the North. Then a lightning assault in the South of Gaza coming from the dessert in the East and the Mediterranian in the West, joining hands in the South and cutting off the smuggling tunnels. No human shields and other fakery to rebut, just clear, decisive victory. The war is won in six hours. Then find all Hamas leaders and either kill them or transport them to Antarctica, the new Palestinian Homeland, and let them throw their firebombs at the penguins, and see how the “international community” likes them then. That’s what must be done when we’re finally serious.