détente
noun [ U ] formal uk/deɪˈtɒnt/ us/deɪˈtɑːnt/
（国家间关系的）缓和，缓解
an improvement in the relationship between two countries that in the past were not friendly and did not trust each other
The talks are aimed at furthering détente between the two countries. 会谈旨在进一步缓和两国间的关系。