Talk:Twilight's Kingdom - Part 2/@comment-25003213-20140618175508/@comment-24908786-20140619005403

Failed in their duties? You mean keeping the Princesses safe? There was not much they could do against Lord Tirek as he could steal their magic as well.

We saw that with the Unicorn Royal Guards and Shining Armor. Plus, I doubt Discord knew about the Crystal Empire Royal Guards as he and Tirek went straight for Canterlot and the Royal Guards there since the Princesses were Tirek's main target.