Although he will celebrate his 81st birthday in less than two months, former Soviet Union leader Mikhail Gorbachev still is an astute observer of the world’s political scene.Unlike his political contemporaries Ronald Reagan (who is dead) and Margaret Thatcher (who is acutely ill), Gorbachev remains sharp and aware, and keeps making headlines. Ever since the U.S. financial crisis of 2007-08, Gorbachev has advocated that the United States needs a similar period of reforms, or “perestroika,” that he advanced in the Soviet Union beginning in 1986.