I searched major recent news sources and wire services for a report combining a Russia–Ukraine peace initiative involving Trump-negotiators AND a simultaneous story of a Briton detained for spying for Russia. I found no reputable article or agency report with those details.
There are many ongoing developments in the war, covert operations, arrests, espionage claims — but nothing that matches the two elements together as described.
Headlines similar to what you quoted don’t appear in recent news indexes or summary feeds.
⚠️ Possible reasons for confusion
Mismatched sources or outdated rumors — It’s possible the title comes from a social-media post, opinion site, or low-credibility outlet, rather than established journalism.
Two separate stories merged incorrectly — There are periodic reports of spies or arrests related to espionage in the context of the war. And separately, there are intermittent diplomatic efforts. But I saw no legitimate source linking both in one event.
Use of speculative language — Headlines promising “key peace talks” before any public scheduling are often speculative predictions, not confirmed news.
🎯 What actually seems more accurate
There have been some renewed calls for peace negotiations, discussions by various mediators, and shifting diplomatic moves — but nothing publicly confirmed as a “Trump-brokered peace talk” with Russia today.
Arrests and espionage accusations involving foreign nationals continue in some countries, but none (in credible mainstream news) specifically reference a “Briton detained today for spying for Russia” tied directly to the current war developments.