 Simultaneously, Amin moved the offices of the president to the Tajbeg Palace, believing this location to be more secure from possible threats.According to Colonel General Tukharinov and Merimsky, Amin was fully informed of the military movements, having requested Soviet military assistance to northern Afghanistan on December 17.His brother and General Dmitry Chiangov met with the commander of the 40th Army before Soviet troops entered the country, to work out initial routes and locations for Soviet troops.