israel 's memorial day commemoration is for bereaved family members such as braham , `` i truly understand everyone who has lost a loved one , '' braham said .
her husband , philippe braham , was one of 17 people killed in january 's terror attacks in paris .
he was in a kosher supermarket when a gunman stormed in , killing four people , all of them jewish us from above .
valls said that france is fully mobilized following january 's attack , which allowed authorities to identify and stop the planned attack .