Well over 90% of the “tanks” Bill Clinton’s forces destroyed in Serbia were in fact very expensive balloons. Many of them also featured small heaters to produce engine thermal signatures.
Some experts think the number is much closer to 100% than 90%.
Yep. See: Serb Dummies Fool NATO Dummies
And, not just tanks, but dummy roads, bridges and soldiers as well as dummy MiG-29 Fulcrums, too. (See: "M-18" - the Serb "Trojan Horse")