There is also a silhouette of an Su-57 painted on the apron, which Russians have been using in an attempt disrupt Ukrainian strike operations. You can read more about that effort here. The second ...

Summary and What You Need to Know: The Russian Aerospace Forces struggle to field a significant number of Su-57 Felon fighter jets due to ongoing production issues and Western sanctions.

Russia selling Su-57s to Iran would fundamentally complicate Israel’s chance to strike Iranian nuclear sites. But that does not seem to be what’s at play—yet.