Pentagon Spokesperson John Kirby stated in this interview that “no U.S. service members were killed in the attack” that took place near the Ukraine-Poland border in the town of Lviv. However, it is important to qualify that government “contractors” are often used in these Military training centers.
The military compound in Lviv, which is only 15 miles from the border with Poland, was being used as a military “training facility” for Ukrainian forces. Knowing the U.S. and NATO were funneling weapons into Ukraine through this specific region, it stands to reason this “training facility” was targeted by Russia specifically because it was a weapons cache for arms flowing into Ukraine.
John Kirby appeared on ABC shortly after the compound targeting was public. WATCH:
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(WaPo) […] On Sunday, Russia’s Ministry of Defense issued a statement that was at odds with the Ukrainian account and threatened more such attacks. “At these facilities, the Kyiv regime deployed a training center for foreign mercenaries before being sent to the areas of hostilities against Russian military personnel, as well as a storage base for weapons and equipment coming from foreign countries,” the statement said. (link)

What the Mueller probe was to President Trump, the J6 Committee is to the MAGA movement.

…”Strategic success in the 21st century is not about a physical land grab of territory; that’s what Putin has done. In this century, strategic power is increasingly measured and exercised by economic strength, by technological sophistication and your story – who you are, what your values are; can you attract ideas and talent and goodwill? And on each of those measures, this will be a failure for Russia.”