There is a military/diplomatic crisis, with many sides involved. Your goal, as an uninvolved party now entering the conflict, is to get as many allies as you can. You make an ally by supporting a given side (among A, H, I, M, R, S, T). But it's not that simple. There are conditions:
You must either support S or A, neutrality is NOT an option.
If you support R, then you support A and I.
If you support A, then you support I and do NOT support M.
If you support S, then you support M and do NOT support A.
If you support I, then you do NOT support S, but support A.
If you support M, then you support H.
If you support H, then you support M and I.
If you support T, then you support M and do NOT support A.
Discussion of this question on the meta: Are puzzles that involve mention of real-world political situation forbidden?