<Tr> <Td> December 5--7 </Td> <Td> United Kingdom: Prime Minister H.H. Asquith resigns and is succeeded by David Lloyd George . </Td> <Td> Details </Td> </Tr> <Tr> <Td> December 6 </Td> <Td> The Germans occupy Bucharest . The capital of Romania moved to Iaşi . </Td> <Td> Details </Td> </Tr> <Tr> <Td> December 13 </Td> <Td> Robert Nivelle replaces Joseph Joffre as Commander - in - Chief of the French Army . </Td> <Td> Details </Td> </Tr> <Tr> <Td> December 17 </Td> <Td> Kaocen Revolt: The Tuareg besiege the French garrison at Agadez . </Td> <Td> </Td> </Tr>

When did france declare war on germany in ww1