Tauseef Mustafa / AFP / Getty Images
Months after a tense standoff between China and India along its border with the Himalayas, Beijing expressed its anger at an Indian drone that crashed into its territory.
"This action by India violated the territorial sovereignty of China, we express our dissatisfaction and opposition," Xinhua told Zhang Shuili, a senior military officer in the western command of China's battle zone.
China said the drone crashed in the "last days", but did not say where. Zhang said that his country would defend its national sovereignty against such intrusions.
He said that China's border defense forces carried out "an inspection of the device", but did not elaborate.
India has not responded to the accusation.  Although the two countries have moved towards warmer relations in recent years, they also have a long history of border tensions. In 1962, they fought a brief but inconclusive border conflict. They have also had ongoing disputes over sovereignty in other border areas, especially Aksai Chin, a region of the Himalayas that encompasses its territorial demarcation in the west.
The two countries have also been at odds over the reception of India by the exile government of Tibet and its spiritual leader, the Dalai Lama, considered by China as a subversive because of its calls for Tibetan independence.
As of June this year, tensions erupted once again over a disputed region called the Doklam Plateau bordering China, Bhutan and the Indian state of Sikkim.
As Julie McCarthy of NPR reported from New Delhi in July, the problems stemmed from the construction of a road on the Doklam plateau by China. "Not far from the plateau is the narrow passage that connects the northeastern states of India with the rest of the country, a strategic link called the Siliguri Corridor, but more commonly known as the Chicken's Neck. be able to cut that "The neck" baffles India.
As early as August, India had rushed troops to the Doklam plateau and, although immediate conflict was avoided, the heated rhetoric of both sides has soured relations
In September, the head of the Indian army said that his country "could not afford to be complacent and must be prepared for war," according to The Hindustan Times.
And in November, China was offended for the visit of Indian President Ram Nath Kovind to the remote state of Arunachal Pradesh, which China also claims, reports Reuters.