From politico.com by Eli Okun headlined “Loose lips about sinking ships”:

BIDEN TRIES TO PLUG RUSSIA LEAKS — The war in Ukraine has seen the U.S. share unprecedented levels of intelligence with Kyiv. And Western governments have stepped up preemptive public disclosures of intelligence to undermine Russian messaging.

But this week, the White House has started to worry that the intel is getting too public.