The U.S. strike against Venezuela on Saturday signals a profound shift in the American global posture, said Sun Suntaiyi, associate professor of political science at Christopher Newport University in the United States, citing the latest National Security Strategy, which suggests an intentional U.S. withdrawal from traditional European security roles, effectively leaving Europe to manage its own defense.

Under this new "America First" doctrine, the U.S. vision for Latin America is one where no rival power or disruptive force can challenge its dominance, Sun said.  

Consequently, a state like Venezuela – which serves as a key partner for Russia in the Americas – is no longer a localized issue, but an intolerable presence in America's backyard that the U.S. intends to control exclusively.