Player Embed Code: Download Embed Share Mattis Welcomes Poland’s Defense Minister to the Pentagon Defense.gov April 27, 2018 | 1:00 WASHINGTONDefense Secretary James N. Mattis hosted an honor cordon to welcome Polish Defense Minister Mariusz Blaszczak to the Pentagon, April 27, 2018. During their meeting, the two leaders highlighted the strengthening of the military relationship between their countries.