The US does not adhere to the standards of the 21st century: maybe the 10th or 11th century (BC, not AD)

"U.S. Secretary of State John Kerry, who voted in 2002 for the U.S. to invade Iraq on specious WMD claims, and who reiterated in 2004 that he would do so again, even if he knew there were not weapons of mass destruction in Iraq, has really laid into Russia on the Obama administration's behalf. Just listen to this tongue lashing:  "You just don't in the 21st century behave in 19th century fashion by invading another country on completely trumped up pre-text." "