st. john newfoundland canada wednesday indicate would put decision contribute troop u.n. peace operation mali upset ally say new delay could undermine canada effort obtain seat security council liberal government prime minister justin trudeau last year say would consider send troop mali take months long predict make mind amid fear soldier would die ally expect announcement canada host peacekeeping conference november toronto star interview publish wednesday defence minister harjit sajjan say decision would make unhappy diplomatic source three nations say delay could harm canada efforts expand influence unite nations body previous conservative government treat suspicion want seat security council active u.n. helpful say one source decline identify give sensitivity situation unite nations deploy 10,000 peacekeepers mali help deal islamist militants officials say send canadian troop mali would inevitably result casualties could prove politically unpopular canada lose 158 troop 10-year stint afghanistan per capita nation serious player unite nations mean always choose safe option say second diplomatic source trudeau come power 2015 declare canada back stress need progressive foreign policy part effort rebuild tie unite nations canada say would commit 600 soldier possible u.n. deployment press one security council 10 non-permanent seat trudeau say wednesday several hundred canadian troop take part international operations latvia iraq ukraine serious re-engaging unite nations peace operations ... need make sure right tell reporters trudeau speak margins cabinet retreat st. john newfoundland due go unite nations next week address general assembly canada help always message bring say ask whether security council bid would suffer canada stall mali mission could hit security council bid