How much rocket fuel would it take to carry a 2 ton rod of tungsten into space?

Don't forget to factor in how much rocket fuel is needed to carry the rocket fuel needed to carry the tungsten!

Also, how fast would the rod need to be travelling through the atmosphere for it to turn the air it displaces into plasma? What other signatures would such a falling object be likely to have? Could it be detected by radar, or infrared or ultraviolet cameras on satellites?

In case you wonder why I ask, there is a theory that the Tianjin explosions last year were an act of war, an attack by USA in retaliation for the devaluation of the Yuan and threats to dump their dollar reserves.

It seems to me that it would be counterproductive to protect the economy by sending very heavy rods of tungsten into space and then dropping them on a target. Also, there is no evidence of a falling object at high velocity on any of the footage I've seen. I'm skeptical of this one.