Go to Trent!
I'm studying International Development Studies with emphasis on International Political Economy.
Seriously, if you want to do something combined between Economics and Politics, then Development Studies is the right one!!! Come to Trent hahaha (the most established department of Development here in Canada).
hm. about Global Studies, it is administered by the Trent International Program. I was thinking of the same thing when I was admitted to Trent 2 years ago but as soon as you come here, you will, unfortunately, realize that it is not as fancy as it sounds. kinda vague and do not have a clear orientation!
You can always go to Law school after... in Singapore? Many students went to Law school after Trent, but more are in Environmental Studies (they have a couple of Law courses here).
I dont think Trent offers as good a teaching as Singapore. infrastructure and funding are not half as great. (NUS may be something like U of T). but it is the new environment that's worth all the trade off: more diverse, more critical, more independent... Trying out something new and fun never hurts right? and the reason i chose Trent instead of NTU or NUS 2 years ago is all about living a university life, where academics is only something besides many others adventures... say, next year i will spend a full year in Ecuador!
final note, Trent is a hippie and super-alternative university. if you are intolerant of queer scenes, weird clothing, anti-America sentiments, bald ladies, -30 in winter, you might reconsider it.
even though i never went to school in Singapore, i have never regretted my choice of coming here. :-j
hope that helps! (and i still desperately want you here haha... i already start the rumour about you at Trent)