- A US veteran who fought in Ukraine said many Western fighters assumed it would be an easy fight.
- He said some "treat it almost like it's a vacation, and they're not really expecting to die."
- Many foreign veterans are not willing to accept that their training has not readied them for this war, he said.
Western fighters who joined the war in Ukraine have been killed, in some cases, because they assumed the fight would be easy, a US veteran who fought in Ukraine told Business Insider.