Killed in Vietnam by Russian Bullet,US to try to increase trade with USSR, why?

Front:
USA KILLED IN VIETNAM BY A RUSSIAN BULLET FIRED FROM A RUSSIAN GUN US. TO TRY TO NENS INCREASE TRADE DAILY WITH US.S.R. AND SATELLITES WHY?

Back:
Courtesy of THE TIDINGS, Los Angeles, October 7, 1966 PLACE STAMP HERE POST CARD Additional postcards - 3 for 10c, 30 for $1.00 100 for $3.00, 500 for $12.50, 1000 for $25.00 Mothers of Servicemen, Box 53, So. Pasadena, Calif. 91030