Just want to add 5 cents here, I almost did the same thing as Edren!
On topic, got some more time to play, hit my first terror mission, thinking it would be okay because I've done them many times before, I think this is my 4th X-Division Veteran playthrough... boy I was wrong! My early game start was kinda rusty, wasn't able to research phase 1 weapons fast enough, I quickly found out I did not have the firepower required to hold back the Xeno hordes!
This is the screenshot just before I aborted the mission, have a couple of Xeno's taking a ride back to my base as well as one outside on the hull. I don't think Bishop would be very happy with me.....
Really liking the new challenge of the new and improved melee units, I need to learn some new tactics and get working on research ASAP, after this hit to my global relations it's looking 50/50 that I may fail this playthrough.