Ukraine would not be at war right now, because the US empire would not have provoked that war, since the US really would be an upholder of peace and international order.

The world would not be staring down the barrel of nuclear armageddon, because the US really would be a normal country that respects the sovereignty of other nations instead of the hub of a globe-spanning undeclared empire which keeps ramping up aggression against nuclear-armed states who refuse to consent to its planetary rule.

China would not be preparing for war, because the US military really would be used for the defense of the United States instead of rapidly encircling the US empire's top geopolitical rival with massive amounts of war machinery.

The middle east would not have spent the 21st century being ripped to pieces by western aggression, because the US really would care about the lives of the people who live there and not just pretend to in order to promote regime change interventionism.