While China is often criticized for its invasion of Tibet (which had never been part of China, but had been part of the Chinese Empire for thousands of years), India is rarely criticized for its invasion of the princely states in the mid-to-late 20th century. Upon independendence, the Indian Union was one of many sovereigns in South Asia, some of which (Hyderabad and Kashmir, famously) did not wish to be part of India. India these complaints and used a combination of threats of force and force to compel its neighbors to join its socialist polity.
If Nehru was really has shocked at China’s invasion of Tibet as he seemed to have been, then his foreign policy really was a foolish as his disastrous economic policy, which held India back for two generations.
This is not to defend China. It is to criticize India.