Declaring someone an enemy does not automatically lead to war. America considered the USSR an enemy of democracy for 50 years. They never went directly to blows.

I'm specifically referring to the attacks on Iran that started this mess ~6 weeks ago. If the US and Iran agree, but Israel decides to continue bombing campaigns, then this ceasefire will be very short-lived.

The parent said war, and the aggressor of the 12 Day War is unquestionably Israel: https://en.wikipedia.org/wiki/Twelve-Day_War

  The Twelve-Day War [...] began when Israel bombed military and nuclear facilities in Iran in a surprise attack