since you both reside in NY, NY courts would have jurisdiction, but since the property is overseas and you resided overseas at the time, the substantive law would be the law where the property is located and/or where you resided a the time if two countries were involved.
Good luck. Unless the equity in the property is substantial this could be very expensive to resolve.
My answer to your question is for general purposes only and does not establish an attorney-client relationship,
What do you mean by "ex-partner?" Were you married? Was your relationship officially recognized by the State? The answer to these questions likely will determine whether the house was marital property or someone equivalent. Because you both live in NY, you can sue here but that does not mean that the foreign country will recognize an order from a NY court. I suggest you consult with a family law and/or real estate attorney.
I am a former federal and State prosecutor and now handle criminal defense and personal injury/civil rights cases. Feel free to check out my web site and contact me at (212) 385-8015 or via email at Eric@RothsteinLawNY.com. The above answer is for informational purposes only and not meant as legal advice.
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