- US offers to grant Chinese airlines same number of weekly flights as American carriers, but only if they agree not to fly over Russia.
- American carriers face higher fuel costs than Chinese rivals whose routes over Russia to the US are much shorter.
- US airlines lobby against granting China more flights because of cost gap.
- China blames US for stalemate in negotiations, says Beijing's proposal to equalize flight numbers is reasonable.
- Dispute over airline routes adds to US-China tensions, latest thorn in the side of relations.
Airlines dispute adds headwinds to US-China relationship
American carriers are lobbying against their Chinese rivals over being granted more flights between both countries
