New Claim for Train Bombings a Clue as to Al Qaeda's Capabilities?

The Abu Hafs al-Masri Brigades has claimed responsibility for the March 11 bomb attacks on trains in Madrid, which left nearly 200 dead and almost 1,500 wounded. The jury is still out on who is actually responsible, but if this group was behind them, it would mean al Qaeda retains the capability to launch attacks in the West. The letter claiming responsibility also mentions that an impending attack on the United States is "90 percent ready" for launch.