In November, the Justice Department unsealed an indictment containing the shocking charge that an official of India’s government, not identified by name, led a brazen conspiracy to assassinate a dissident Sikh political activist on U.S. soil. Now, that charge has become even more grave with The Post’s revelation that U.S. officials have identified the plotter as Vikram Yadav, an officer in India’s spy agency, the Research and Analysis Wing (RAW), and have concluded the operation was approved by the RAW chief at the time, Samant Goel. India should get to the bottom of this appalling murder-for-hire case — and the United States should make clear that it will not tolerate such crimes within its borders.