I've acted in circumstances where there were UK shares held by an irish resiedent. We had to apply for a UK grant of probate.
I'm assuming that the "law" is the way in which it is divided.
If there is no residue clause then I believe the foreign assets are dealt with as in an intestacy. If there is a residue clause then the assets are brought into that.
what you need to find out is how the estate abroad can be liquidated and that will require advice form a lawyer in that country.