Russian President Vladimir Putin and North Korean leader Kim Jong Un signed a mutual defense pact this week, vowing to “immediately provide military assistance” to the other in the case of an attack. The deal formalizes an arrangement that has strengthened since Putin’s invasion of Ukraine: Munitions-hungry Moscow…

Despite months of U.S.-led airstrikes against Yemen’s Houthi fighters, the once ragtag rebels have continued to threaten some of the world’s most vital shipping routes, drawing from an arsenal of increasingly advanced weapons to attack vessels in and around the Red Sea. Just this month, Houthi…