I use several sources in the hopes of getting a more complete picture. I sometimes select categories like “Europe” on these sites but here are the ones I have bookmarked and use the most. I try to use mostly reliable sources.

Reuters (World)

Associated Press (World)

BBC News

Ars Technica

Der Spiegel (International)

I agree that Signal is nice, but I think the point here is that Delta Chat is decentralized