Currently on my second veteran ironman game. I'm going to lose the Americas since I have no radar coverage at all on them. My weak link is Australasia. Built my second base too far north of it, so only have half radar coverage there. I'm going to have to go all out to protect it as best I can. Getting rid of my Condors as early as possible and swapping for Foxtrots seems to have helped enormously this time around, as well as getting used to sometimes manually controlling my interceptors. Both bases have two Foxtrots and a Corsair, and I'm currently manufacturing a Marauder. Air dominance has been pretty important.
On the ground I was on a run of 6ish missions without losing a troop, but on my last mission I lost two, one of which was my squad Captain. Currently on an Alien Base mission, but losing my nerve a bit. One strategy I've been employing to good effect is -- bring along extra shields! This can help a lot. I usually bring along an extra shield per guy. Just give the shield to whoever can carry it and drop it at the start of the mission as a backup. I also do a similar thing for my Rocketeers and bring along a couple of extra rockets per guy. Got my first Predator armour which I was super excited about until my troop got one-shotted wearing it... didn't give me quite the Terminator style protection I was hoping for! Haven't captured an Alien Leader yet, as I keep getting Andron bases and the Leader is pretty much unknockoutable. All in all I'm doing pretty well, but just need to get a second wind. My alien terror mission tactic is bring along a tank with a pulse laser, back it up with smoke grenades, and try to explode as much as possible without losing the vehicle. Also, I bring along two rocketeers minimum. On one mission I brought along 5 Rocketeers. Basically just explode everything.