This is the new Russian cruise missile, the Kh-101/102.
According to Aviation Week (paid subscription required) this is to have a roughly 5000km (3000 mi) range and a small radar cross section.

This compares favorably to the current Kh-55, a non stealthy design with a shorter range (2550 km) and smaller size (6m vs 8m).

On the bottom, about halfway down, appears to be a chin mounted air intake, though this might be some sort of EO sensor, as the -101 version is conventionally armed, and hence needs more precise targeting.

It can be carried internally on the Tu-160 Blackjack, and externally on the TU-95 Bear.