Undated video circulating on social media shows Russian troops moving through dense fog in Pokrovsk as Moscow steps up efforts to reinforce positions. Ukraine says around 300 Russian soldiers are in the town and are trying to push north to encircle the area. | Al Jazeera English

Granted rare access inside the Kremlin, CNN's Fred Pleitgen attends a meeting between Russian president Vladimir Putin and the president of Kazakhstan. | CNN International