What is the fallout from Iran’s attack on Israel?

A demonstrator waves Iranian and Palestinian flags during an anti-Israeli gathering at the Felestin (Palestine) Square in Tehran, Iran (Vahid Salemi/AP)

The unprecedented attack by Iran on Israel early on Sunday ratcheted up regional tensions, confirming long-held fears about the Israel-Hamas war spiralling into a broader conflagration.

But Iran, Israel, the United States and Hamas also walked away with some gains.