It's standard procedure for most corporations that when their execs travel to China that they're issued a new phone before they go and that phone is destroyed when they return. Lots of malware has been found on any device that enters and leaves China, and most of it is of government origin.
When my wife and I went to Germany for vacation this year, I left my laptop at home and bought a Chromebook for $200. It was infinitely lighter than my Air and all I really needed it for was some web surfing, email, and transferring pictures from my cameras to flash drives. It also ran for 10-15 hours on one charge. If it were lost or stolen then I'm out $200, no big deal. I was originally thinking about doing a fresh OS install on my Air so there's be lots of space and no data that could be stolen when I realized that buying a Chromebook was a lot less work.
I went back and forth on whether to take my iPhone to Europe. Since it was an international phone, all I'd need is to buy a new chip with a data plan. In the end I took it, though we had to buy a phone for my wife (less than $100 for a smartphone with a chip). They were invaluable for mapping (finding a route back to the ship!), finding restaurants, and looking up subway stops. And now we have two international phones for whenever we go to Europe again.
I think the best way to secure your information for international travel is a blank laptop and a virtual desktop, as noted, you'll be dependent on foreign internet speeds. If border control seizes it for some reason, you're out the cost of the hardware and your data is secure. Call the office when you first need it to have them activate it, call them when you leave to come home to have them shut it down until you return.
[font="Arial"]Knowledge is of two kinds. We know a subject ourselves or we know where we can find information upon it. --Samuel Johnson[/font]