A picture taken on March 9, 2017, in Paris, shows the French headquarters of LafargeHolcim, a group created in 2015 by the merger of French cement manufacturer Lafarge and its Swiss counterpart Holcim. French-Swiss group LafargeHolcim is ready to sell its cement to build US President Donald Trump's controversial border wall, the company's CEO said in an interview. The wall Trump promised to erect along the US-Mexico border, valued at tens of billions of dollars, is at the center of a diplomatic crisis between Mexico City and Washington and is provoking criticism around the world.  Thomas SAMSON / AFP
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