In theory precedent says who attacked first didn’t matter. The US was bombing Afghanistan for 20 years, but when 911 happened the US invoked article 5 and every single NATO country had to donate blood to the cause and suffered fatalities in Afghanistan.
They would just argue Israel is the victim of Turkish aggression and not the other way around so Article 5 doesn’t apply even if Israel retaliates.
In theory precedent says who attacked first didn’t matter. The US was bombing Afghanistan for 20 years, but when 911 happened the US invoked article 5 and every single NATO country had to donate blood to the cause and suffered fatalities in Afghanistan.