<Table> <Tr> <Th_colspan="2"> Chief Minister of Nagaland </Th> </Tr> <Tr> <Td_colspan="2"> Incumbent T.R. Zeliang since 19 July 2017 </Td> </Tr> <Tr> <Th> Appointer </Th> <Td> Governor of Nagaland </Td> </Tr> <Tr> <Th> Inaugural holder </Th> <Td> P. Shilu Ao </Td> </Tr> <Tr> <Th> Formation </Th> <Td> 1 December 1963 </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Chief Minister of Nagaland </Th> </Tr>

Who is the chief minister of nagaland now