In the poem "No Men are Foreign" by James Kirkup, how does the poet suggest that all people on earth are the same?

Kirkup accomplishes the idea of emphasizing the common
links between all human beings in highlighting the humanity that all of us share.  This
vision is one that stresses a certain "oneness" in the human condition. The idea of
everyone being able to feel pain, experience life in the same way, endure the same
biological or scientific realities are all examples that Kirkup uses to emphasize that
we are all the same.  The realities of death are the same for all human beings and our
lives are governed by the same scientific principles.  In this light, the poem suggests
that when we shed the arbitrary distinctions of "foreign" or "native," conditions that
are imposed by individuals, we see that we have more in common with one another that
transcends the temporary and human made labels that have been applied to one
another.