China claims Taiwan as its territory, and has repeatedly refused to rule out taking the island by force, but the pressure it heaps on Taiwan is not limited to threats about invasion. It also exerts diplomatic pressure, by insisting that any country wanting official ties with the world’s second largest economy must at the same time refuse to recognize Taiwan. As a result, a dwindling pool of nations are willing to hold diplomatic relations with the island democracy of 23.5 million.
Before Castro’s announcement, Taiwan had just 14 diplomatic allies – down from the 56 it had in 1971, when it lost recognition from the United Nations, and down from 22 when its President Tsai Ing-wen took office in 2016.