It ignited a firestorm of theories that illuminated the deepest fractures within the Republican Party since the Cold War. Within hours, social media exploded with speculation that Israel's Mossad had orchestrated the assassination to neutralize what some saw as a rising threat to Israel's influence in Washington.

While speculative, the speed and ferocity with which such conspiracy theories spread reveal something profound. Kirk's assassination has become a symbol of the impossible balancing act facing Republican leaders as younger conservatives shun pro-Zionist sentiments, abandoning Israel in numbers that would have been unthinkable a decade ago.

The unraveling Republican–Israel consensus

Kirk's assassination was a flashpoint, but the deeper story is in the data. A University of Maryland Critical Issues Poll (29 July–7 August) exposed a dramatic generational schism: While 52 percent of Republicans aged 35 and over sympathize more with Israel, only 24 percent of Republicans aged 18–34 say the same.