in 1980. he commanded the elite team for three years. the unit is best known for killing osama bin laden in 2011. he worked his way up to the rank of commander. in addition to his military career, he wrote several books including an autobiography "rogue warrior." his son says he may have died from a heart attack in his home on christmas day. he was 81 years old. a white house spokesperson announced the january 10th meeting saying, quote, when we sit down to talk, russia can put their concerns on the table and we can put our concerns on the table with russian activities as well. they're centered around a buildup of russian troops near the ukraine border, sparking fears of a possible invasion there. the kremlin denies any military action against ukraine and has put forth a lit of security