The South Korean Air Force is preparing to purchase 60 additional fighters to replace its F-4 and F-5 aircraft five years sooner than planned. Finland's leaders say the country "must apply" for NATO membership, in response to Russia's invasion of Ukraine, and is expected to apply at NATO's Madrid summit in June. Australia will spend $8 billion to buy Boeing AH-64 Apache attack helicopters and Sikorsky MH-60R maritime helicopters, Prime Minister Scott Morrison announced. Poland says it will protect Slovakia's airspace should the latter decide to ground its fleet of Mikoyan MiG-29s and transfer the fighter aircraft to Ukraine. Switzerland's government says it will sign a contract to buy its planned fleet of 36 Lockheed Martin F-35 Joint Strike Fighters by the end of March 2023, before an offer deadline expires.
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