is here: Long Range Strike. The core of the piece is this:
the United States has little choice but to invest in the US Air Force's new long-range penetrating stealth bomber programme until it reaches fruition. Right now, the USAF plans to buy only 80 to 100 of the LRS-B aircraft but analysts and retired officials say that number may not be sufficient... Lt Gen David Deptula, the USAF's former intelligence chief and Rebecca Grant, a noted air power expert, both say more are needed--155 to 200 jets.
This would cost hundreds of billions of dollars. I don't see a need for a manned long range bomber when a remotely piloted aircraft is possible. Targets could be designated from space.