Ilya reminds me of Frank Pentangeli from Godfather II.
1) Frank becomes a witness for the Feds against the Coreleone.
2) Frank recants when his brother shows up at the hearing reminding him of the consequences of breaking the oath of silence.
3) Frank kills himself to ensure his children's safety.
https://movies.stackexchange.com/questions/59089/why-did-fra...