Zimbabwe

What is going to happen to all these ppl? They r dying of cholera and starvation. 20 000 ppl. Why cant someone go and kill Robert Mugabe? He is 84 and killing all of his ppl. He said Zimbabwe belongs to him and he will keep it. He is a murderer and still ppl let him rule Zimbabwe.
Where is the right in that? Where is there a god helping these ppl who r dying and the cruelty they have to go through before they die?