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- Sweden has formally joined the NATO alliance.
- Sweden's membership enhances NATO's capabilities against Russia.
- It would enable NATO to strike key Russian cities.
As Sweden's NATO membership took a decisive step toward becoming a reality, Russia was issued with a stark warning.
"If Russia dares to challenge NATO, Kaliningrad would be 'neutralized' first," the former Lithuanian foreign minister, Linas Linkevicius tweeted on X in February.