Tucker Carlson claims Charlie Kirk was killed over his shifting views on Israel — an explosive, unproven accusation aimed at the conservative movement and US-Israel politics.

• Charlie Kirk was murdered, and Carlson rejects the idea it was over Kirk's stance on transgender issues.
• Carlson, a friend of Kirk's, says he and others close to Kirk believe he was likely killed because his views on Israel were changing.
• Carlson admits he has no proof and could be wrong, but says he feels a duty to say what he believes is true.
• The claim raises the stakes inside the right over how to talk about Israel.

Outlook: Expect pushback and a fight on the right over Carlson's unproven Israel claim, with no evidence yet offered to back it.