By Scott Malone CAMBRIDGE, Massachusetts (Reuters) – The support of Venezuela and Cuba will play a key role in Colombia's efforts to reach a negotiated end to Latin America's last major guerilla war, Colombian President Juan Manuel Santos said on Wednesday. Santos, who 10 months ago launched a round of talks with the left-wing FARC rebels, said he believed talks in Havana could bring an end to a 50-year conflict that has taken the lives of more than 220,000 people, mostly civilians. …
