2 0 0 8 , ▁M . ▁G he ble h ▁proved ▁that ▁the ▁circular ▁chrom atic ▁index ▁of ▁the ▁type ▁ 2 ▁generalized ▁Bl anu š a ▁sn arks ▁ ▁equals ▁. ▁ ▁Gallery ▁ ▁References ▁▁ ▁Category : Ind ividual ▁graphs ▁Category : Reg ular ▁graphs <0x0A> </s> ▁The ▁social ist ▁frat ernal ▁kiss ▁was ▁a ▁special ▁form ▁of ▁gre eting ▁between ▁social ist ▁leaders . ▁The ▁act ▁demonstrated ▁the ▁special ▁connection ▁that ▁exists ▁between ▁social ist ▁countries , ▁consisting ▁of ▁an ▁em brace , ▁along ▁with ▁a ▁series ▁of ▁three ▁kiss es ▁on ▁alternate ▁che eks . ▁In ▁rare ▁cases , ▁when ▁the ▁two ▁leaders ▁considered ▁themselves ▁exception ally ▁close , ▁the ▁kiss es ▁were ▁given ▁on ▁the ▁mouth ▁rather ▁than ▁on ▁the ▁che eks . ▁ ▁The ▁social ist ▁frat ernal ▁em brace ▁consists ▁of ▁a ▁series ▁of ▁three ▁deep ▁h ugs , ▁altern ating ▁between ▁the ▁left ▁and ▁right ▁sides ▁of ▁the ▁body , ▁without ▁kiss ing . ▁This ▁modified ▁gre eting ▁was ▁adopted ▁by ▁Commun ist ▁leaders ▁in ▁Asia , ▁which ▁la cks ▁a ▁tradition ▁of ▁che ek ▁kiss ing ▁as ▁gre eting . ▁During ▁the ▁Cold ▁War , ▁Commun ist ▁leaders ▁in ▁Asia ▁cons ented ▁to ▁receive ▁kiss es ▁from ▁Europe ans ▁and ▁Cub ans , ▁but ▁they ▁themselves ▁omitted ▁the ▁kiss . ▁ ▁Since ▁the ▁fall ▁of ▁Commun ism ▁in ▁Central ▁and ▁Eastern ▁Europe , ▁the ▁social ist ▁frat ernal ▁kiss ▁has ▁died ▁out . ▁However , ▁the ▁social ist ▁frat ernal ▁em brace ▁continues