Poland has urged NATO to impose a no-fly zone over Ukraine following a series of Russian drone incursions into alliance airspace. NATO launches ‘Eastern Sentry’In response, NATO launched Operation Eastern Sentry to reinforce its eastern flank. A divisive proposalCalls for a NATO-enforced no-fly zone over Ukraine are likely to prove controversial within the alliance. Analysts warn that such a measure would mean confronting Russian aircraft directly, a move Moscow has said it would treat as an act of war. But Poland’s demand for a no-fly zone highlights the alliance’s central dilemma: how to reassure frontline members while avoiding a direct military clash with Russia.