China’s Foreign Ministry said Thursday it is restricting travel by some U.S. officials to Hong Kong after the U.S. placed financial sanctions and a travel ban on 14 Chinese officials.

The partnership between the US Department of Defense (DoD) and the Central Intelligence Agency (CIA) has stood for decades and often involves Pentagon officials offering a variety of support, including logistics and transportation, to the spy agency.

Two Russian citizens who had been held by the U.N.-backed government in Libya for more than 1 1/2 years on spying charges were released from captivity on Thursday, officials in Russia said.