The worldwide incomes of US citizens and LPRs are subject to US income taxes, unless specifically exempted by the tax statutes.
The US and some countries may have treaties with each other that limit some taxes.
In general, properties received as settlement of a divorce is not subject to US income taxes. Different rules apply if one of the divorced spouses is a nonresident alien.
WA has no state income tax for individuals. So, you likely do not have to worry about paying taxes to WA.
There are many missing relevant information regarding your situation. You may want to review your specific facts with an attorney.