Retirement tax questions

My German Aunt died and left me and 7 others in Germany and here in States, a small inheritance of  $ in her verified German accounts.  Per info request letter from German Finance Office I already had to prepay German Inheritance tax in Jan. 2019. No closure yet of this problem, no $ yet received to date.  Is the 2019 prepaid tax and any other costs to finalize this event deductible on my 2019 tax, and possibly in 2020?