Can I deduct mortgage interest and real estate taxes paid on my foreign residence?

Yes, you are typically allowed the same deduction for mortgage interest. However, effective with tax year 2018, foreign property/real estate taxes paid are no longer eligible as an itemized deduction. The deductions are taken on Schedule A, assuming the standard deduction is less than the total of your itemized deductions. You may be able to deduct/exclude other foreign housing costs, depending on your situation.