

It’s not a sign of their bias (which might or might not exist), it’s just how we name wars: Vietnam War, Afghanistan War, Kosovo War, Ukraine War, Afghanistan war (again, this time with another aggressor, but still named after the attacked party)…
Calling it “Israel War” would just be wrong, because neither is Israel the one who’s being attacked, nor are Israel’s girls elementary schools being turned into rubble.
How about “US-Israel war with Iran”, which they already use. But in a headline you want to be short and concise. If you write “the Iran war” today, everyone knows which war you mean and who started it, there’s no need to repeat it in every headline. For the same reason they write about “renewables” instead of “renewable energies such as wind, water, biomass and solar power” and they write about “energy crisis” instead of “oil and oil-product supply crisis”. Because
How the US-Israel war in Iran oil and oil product supply crisis caused by the blockage of the Strait of Hormuz by Iran in response to the US-Israeli attacks strengthens the case for renewable energies such as wind, water and biomass which some countries in Europe already produce a lot of
is not a good headline.