Unconditional American support for Israel — once the bedrock of conservative foreign policy — is crumbling in real time. From Congress to right-wing media and Trump-aligned grassroots organizations, a new tone is taking shape towards Israel: one of skepticism, impatience and in some cases outright hostility. The Republican Party’s old covenant with Israel is no longer sacred — and the cracks are widening fast. In the mid-20th century, Republicans were generally skeptical of Israel, instead favoring Arab ties. Support grew later, driven by Cold War strategy, evangelical Zionism, neoconservatism and post-9/11 alliances — ultimately transforming the GOP into Israel’s most...