Reuters is one of the least biased news sources out there. But much "bias" is organic to a mode of thinking or concern (hence any internationally-concerned outlet being branded as "liberal" here) and Reuters, I feel at least, often limits the scope of their factual reporting by way of their affirmative anti-bias. Which isn't bad, but also isn't always great. For my money, you don't get any better original fact reporting than The Intercept. They've recently tried to elbow into the more-profitable domestic partisan sphere, but when they stick to libertarian-style issues (metadata, MIC, surveillance, govt propaganda, foreign wars, etc.), they're top of the class.