REUTERS/Stringer
The spokesman said the two were downed near Savur Mogila in eastern Ukraine. No details were known about the pilots.
Rebels said they hit two Su-25s in Snezhnoe, which is near where they accidentally shot down Malaysia Flight MH17 on July 17, killing 298 people.
The Wall Street Journal reports that The U.S. believes Russia has continued arming and training separatists in spite of the MH 17 tragedy.
"We don't think they have stopped," one U.S. intelligence official told WSJ. "We think they continue to do it."
REUTERS