Will the British museum finally give back the Parthenon marbles?

It’s not news that museums all around the world contain works of art that have been looted or forcefully taken during colonial rule but is it time they gave them back? 

It seems pretty straightforward for an increasing number of people that it is the moral thing to do and that art and artifacts belong in their country of origin. Museums often counteract this by saying, amongst other things, that if they returned these objects they would be left nearly empty, or that these countries or territories no longer exist so where would they go back to, or...