The Kajiki Firework Conflict

Starting in 1994, this attack organized by Fergus D. Bohammed was launched on Cock Island using only fireworks as ammunition. Even thought it seemed impossible, Doofy got his way into the capital and set of his ultimate firecracker, but by then the Russians had all retreated. 67,870,006 deaths were reported, and thousands more injured. Once Fergus won over the rights to the country, he sold it to America for 3.5 Trillion dollars.
Russian is now American property. America has set up multiple military and naval bases along the coastline to increase their hold on the land. If Doofy could take the country by himself with only fireworks, who could say someone else might try the same?