artifacts and blowing up buildings. the pentagon is protesting what it calls an aggressive unsafe maneuver by a fighter jet over the baltic sea. an air force plane was flying in international air space and intercepted last week by a russian su-27. the pentagon warns these actions could escalate tensions with the united states and russia. russia accuses the u.s. of approaching its air space with an electronic transponder signal. >> given all that has happened in the past year you don't want that happening. her son guilty on all charges, but boston marathon bomber dzhokhar tsarnaev's mother is not buying it. who she blames for her son's crime next.