U.S. citizen and Army veteran Nicholas Maimer killed in Ukraine

A U.S. citizen and Army veteran, Nicholas Maimer, was killed in Ukraine, his uncle confirmed this week.

Maimer, a former Green Beret, previously said he went there to help train Ukrainians in how to defend themselves. In an interview with the Idaho Statesman last year, Maimer said he felt a "calling" to help in Ukraine after Russia invaded. Before the invasion, he had been teaching English in Spain. 

"I think this is one of the most clear-cut unjust invasions in recent history," he told the newspaper. "It's really obvious to everybody that it's an unjustified invasion. So I felt like my moral compass just pointed me towards it."