sentences:  In domestic affairs, Thatcher is best known for her sweeping policies concerning the affairs of the economy, including the privatisation of most nationalised industries.In foreign policy, she fought a war against Argentina and played a key role with US President Ronald Reagan and Soviet leader Mikhail Gorbachev in ending the Cold War.By the late 1980s, she would alienate several senior members of her Cabinet with her opposition to greater economic integration into the European Community.