>http://washingtonexaminer.com/obama-waives-ban-on-arming-terrorists-to-allow-aid-to-syrian-opposition/article/2535885

"Americans deserve an explanation".

True. But the article itself states that he must provide it:

"Under section 40(g) of the AECA, the Obama team must also provide Congress — at least 15 days before turning over the weapons — "the name of any country involved in the proposed transaction, the identity of any recipient of the items to be provided pursuant to the proposed transaction, and the anticipated use of those items," along with a list of the weaponry to be provided, when they will be delivered, and why the transfer is key to American security interests"