Welcome to Hetalia: Axis Powers Answers. What would you like to know?

Well, there was ONE episode... America's president asks him call Russia asking for 25 cm condoms in order to lower Russian self esteem, which they described as "psycological warfare". Although it should be said that it is never outright stated what war that took place during... but I guess it's the logical conclusion that it was what they were referring to. On a semi-related note, on the english dubbing DVD of Hetalia Season 1, there is a commentary titled "The Cold War", done by Russia and America's voice actors. In case you were interested.