Yandex News RSS as a source: what NewsPulse documents
The README lists Yandex News RSS among supported sources. You add it under News sources and follow the usual workflow: schedule, runs, logs, filters.
The README warns that some networks may return an auth/challenge page instead of XML. In that case the source is skipped automatically to avoid parsing garbage—fix networking or proxying on your side.
Proxies
For Yandex RSS, the source proxy applies, or NEWSPULSE_RSS_PROXY when empty—not the Google News fallback chain.
Troubleshooting
If a feed stays empty, read collection logs to see whether HTML was returned instead of RSS.