The Heritage Foundation Strategic Research Institute concluded that the United States Army would not be able to win in two large-scale wars at once.. In a report prepared by the foundation, the index of the ability of the United States to fight with two large countries, such as the Russian Federation and the People's Republic of China, is rated as "marginal". In addition, the so-called “4 + 1 threat” from Russia, China, North Korea, Iran and terrorism poses a serious danger to the national interests of the United States.. In fund documents, the ability of the US Armed Forces to respond corresponds to one of five indices on a scale from “very weak” to “very strong”.

Earlier, American experts said that Russia cannot be conquered because of the harsh climate, the vast territory and the specifics of the Russian national identity.. "The Russians will rather destroy their country than leave it to any invader," We are the Mighty quoted RIA Novosti as saying.. China, according to American military experts, is impossible to capture, since 1.3 billion people live there, and the developed economy of the country suggests that the Chinese Armed Forces have the latest weapons.