This is Senator Marco Rubio who has just been appointed the new United States Secretary of State (Foreign Minister). This is the most high profile job in the United States government after the President himself.
Marco Antonio Rubio is an American politician and lawyer serving as the senior United States senator from Florida, a seat he has held since 2011. A member of the Republican Party, he served as Speaker of the Florida House of Representatives from 2006 to 2008.
These folks are like graffiti artists. They write things on the wall. Indeed the writing is on the wall.
Oxford Dictionary : the writing is on the wall, clear signs that something unpleasant or unwelcome is going to happen.