I think if you buy from amazon, they already assured that the items you bought will be covered by warrenty (correct me if i am wrong). My friend went to look at a panasonic camera, amazon dont ship that to singapore. The reason was either the manufacturer dont allow or the warrenty issue.
Anyway, mine is on the way to sg! yay
Hop over to the Opensurface thread, you can read a lot of info about the warranty. For N7 2013 by amazon, soft got international warranty (earlier batch), some don't have (later batches, only North America warranty, this has been confirmed by ASUS). That is why I assumed mine don't have.

