In many cultures the gesture of running ones thumb across their throat is considered a threat. In Russia this same gesture means they are full or cannot eat anymore.
An extended arm is a sign of needing a ride. In Russia this is the gesture used to flag down taxis.
Extending out the first three fingers closest to the thumb on either hand is a sign of victory. This is used much the same as the V sign or peace sign is used in Great Britain.
Crossing ones hands behind their back is similar to Americans crossing their fingers. It is a gesture used to renege on a statement or promise.
Giving a thumbs up in Russia is considered an insult. Unlike many cultures that consider it a sign of approval it may actually cause hostility.