How to forward iPhone messages to Macbook or iPod?
Your icloud should still work - meaning FaceTime should still be operational - for the rest you have to rely on your MacBook and iPod - iPhone with a new number is useless - or just use your US sim knowing that you will be charged long distance roaming etc.  I'm an expat a long time - we have our limits in communicating back home - stay with your MacBook. Safe and not sorry