Russian tank jack-in-the-box effect https://koputokiryo.com/%e3%80%90%e8%8b%b1%e5%ad%97%e6%96%b0%e8%81%9e%e3%82%92%e8%aa%ad%e3%82%80%e3%80%91%e3%82%a6%e3%82%af%e3%83%a9%e3%82%a4%e3%83%8a%e3%81%ab%e3%81%82%e3%82%8b%e3%83%ad%e3%82%b7%e3%82%a2%e3%81%ae%e6%88%a6/russian-tank-jack-in-the-box-effect/