Who could teach me

Some said that Tu-95 was able to flying through the north polar, but B-52 wasn't so Tu-95 is more advanced than B-52.
I suspected that are there any evidence can prove Tu-95 which has already flying through the north polar and B-52 also can do that

Commercial aircraft can fly over the pole so I suspect its no big deal for the B-52 as well as the bear.

Well said! Also, the B-52's have been operated from bases in and near the Arctic Circle, such as Tuley AFB in Green Land. Also, during the Cuban Missile Crises, they flew some of the B-52's over the pole to get to their patrole area just north of the USSR. They have flown over the North Pole before, why would they not be able to do it again?

Tim