Such espionage involves covert gathering of information about the capabilities and intentions of foreign governments, about foreign areas where they may have a strategic interest, or about their general position on international relations. Methods include wiretapping, bugging, compiling of political dossiers, microphotography, theft, use of computers, blackmail, intimidation, kidnapping, defection and abuse of diplomatic privilege. It may lead to international tension and cold war and also an extensive domestic political espionage network to ensure the survival of the country's international intelligence unit.