It might have been funny 10,000 years ago when it was first told. Now it's just something your fox news watching uncle says to your hippy cousin every Thanksgiving with a smug grin on his face.
It's less about being a power. The British Empire was "A Power". The US is "A Power". Russia has been "A Power" and wants people to think it still is. China is "A Power".
Unless you use it to the benefit of the people, it's just posturing.
"Song"