The United States launches devastating wars in other countries to serve its own interests and leaves in its wake catastrophic consequences, which makes it the world's biggest violator of human rights, a Chinese academic has said in a recent interview. Wang Jin, a research fellow from the Syria Research Center at Northwest University in Xi'an City, said the United States' self-perpetuating system of permanent war involves invading countries under false pretences and then withdrawing, leaving those countries in disarray.