Associate Apple ID with two different SIM cards (phone numbers)
If you have another phone, you can forward both phone calls and messages from one number to another. If you have another iPhone, you can forward messages for free - just go to Settings > Messages > Text Message Forwarding. This will make the message appear on both devices within a minute or so of each other. If you don't have an iPhone, I expect other phones would have an SMS forwarding capability, but there would be a per message cost. 

I use this so I don't have to carry a work and personal phone, and it works well. The only complication you have is that it is in 2 different countries, so there will be roaming charges (I expect).