WARSAW, Poland (AP) — Poland’s prime minister pledged Thursday to push ahead with a “great modernization program” for his country’s military and Finland’s president warned of further unease over security in Europe, a day after Russian drones struck on Polish soil and alarmed NATO leaders about what the Kremlin’s future territorial ambitions might be.

The incursion Wednesday, which came during unrelenting Russian strikes on neighbouring Ukraine, deepened longstanding fears that the three-year war between Poland’s neighbors could precipitate a wider conflict. U.S.-led efforts to steer Moscow and Kyiv toward a peace settlement have so far failed to get traction.

European officials described the incursion as a deliberate provocation, forcing the NATO alliance to confront a potential threat i

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