With fiery rhetoric befitting his hero status within the tea party movement, he condemns the foreign policy of President Barack Obama and his first secretary of state, Democratic front-runner Hillary Clinton, as weak, ineffective and dangerous. A gigantic mural hangs in Cruz's Senate office featuring the Republican icon standing in front of Berlin's Brandenburg Gate, making his famous call for Soviet leader Mikhail Gorbachev to "tear down this wall." Yet while promising to destroy the Islamic State, beat back aggression from Russia, China and Iran, and ensure extremists don't infiltrate the U.S.