The expert consensus was that if any power was to challenge the collective self-defense of NATO, it would be Russia. The fear has been for some years that President Vladimir Putin might launch an attack on a smaller NATO member, perhaps in eastern Europe or the Baltic, to test if the world’s most powerful military alliance would hold together. But what if it is not Russia but Israel that is the first to challenge NATO’s integrity and collective will for self-defense?

Israel's recent strike on Syria's Abu al-Duhur airbase signals a new dangerous front. The underlying contest involves shaping Syria's future military and political order. Israel…

The expert consensus was that if any power was to challenge the collective self-defense of NATO, it would be Russia. The fear has been for some years that President Vladimir Putin…