First of all, I would like to thank you very much for your efforts and maintenance by promoters.
Now, I happened to have read an article about the U.S diplomats issue, and the first line says,
The Cuban president sent for the top American envoy in the country to address grave concerns about a spate of U.S. diplomats harmed in Havana.
What I would like to ask you is, what kind of "role" could this for ( in bold ) be playing for?
Thank you so much in advance.