Scott Ritter. It’s impossible to prevent bank robberies.As long as there are criminals who wish to rob banks, the crime will occur.But if society makes the certainty of retribution a reality, the a sense of deterrence will exist.It is impossible to prevent Ukraine from assassinating Russian Generals in Moscow.And as long as Ukraine believes there will be no significant retribution for its crime, the crimes will continue.Russia must retaliate harshly for the assassination of General Kirillov and his aide.Because if Ukraine believes it can get away with this crime, more crimes will occur.