washington u.s. president donald trump speak french president emmanuel macron friday discuss joint counterterrorism operations sahel region africa white house say statement u.s. military say early friday fourth soldier kill oct. attack niger raise death toll incident throw spotlight u.s. counterterrorism mission west african nation macron express condolences shoot las vegas sunday trump convey condolences regard knife attack marseille monday statement say trump macron discuss joint counterterrorism operations africa 's sahel