Reuters or AP IMO. Both take NPOV and accuracy very seriously. Reuters famously wouldn't even refer to the 9/11 hijackers as terrorists, as they wanted to remain as value-neutral as possible.
In addition to that dpa from Germany for German news. Yes, dpa has had issues, but it is in my experience by far the source trying to be as non partisan as possible. Not necessarily when they sell their online feed business, though.
Disclaimer: Started my career in onine journalism/aggregation. Hada 4 week internship with the dpa online daughter some 16 years ago.
It's been a long time since 2001. Are they still value-neutral today on foreign news? It seems to me like they're heavily biased towards western POV nowadays.
