20673
Yet we engaged in '' detente '' with Moscow , because the thrust of U.S. policy in the Cold War was to reduce the Soviets ' ability to threaten us -- through deterrence and arms control agreements -- and then let the information revolution and popular disgruntlement destroy the Soviet Union from within .
 country of capital: Soviet Union, Moscow
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: ethnicity, place lived, geographic distribution, company industry, country of administrative divisions, administrative division of country, location contains, person of company, profession, ethnicity of people, company shareholder among major shareholders, sports team of location, religion, neighborhood of, company major shareholders, place of death, nationality, children, company founders, company founded place, country of capital, company advisors, sports team location of teams, place of birth 
Text: {0} 
 Entity Pairs:  Soviet Union, Moscow 
Answer:
 country of capital: Soviet Union, Moscow