A nation that budgets more than $840 billion for national defense has reason to believe it is well-insured. But circumstances change. What was good enough before may not be good enough for long. 
NATO, Russia to hold nuclear exercises; US, allies pledge improved Air defenses for Ukraine; F-16s intercept Russian bombers.
World: ASC22--Air Force adapts ACE; An emphasis on people; Flexibility for the Air Force future; Collaborative Combat Aircraft; Semper Supra.
Ukraine’s air force and air defenses, which include contributions from partner nations, have kept the air space over the country contested for nearly 100 days without the transfer of additional aircraft. But with no prospect of an end to the war, and Russia making advances ...