Japan wants to purchase F-22s to replace its locally produced F-4 Phantoms, which is nearing the end of its service life, but is looking at alternatives, since congress is showing no signs of changing the laws that forbids this.

As a result, Boeing is making proposals to the Japanese about co-developing an advanced version (paid subscription required) of either the F-15 or F-18.

According to the article, Japan is looking at the F-16 and Eurofighter Typhoon, with the defense minster favoring the latter, though that may be a tactic to get F-22s released to the JASDF.