Chad Asks US Troops to Cease Operations at Strategic Army Base
bloomberg.com
bloomberg.com
The reasons why are undoubtedly complex, but the results are not.
I used to think that the old joke about boats being holes in the water that you poured money into was funny, until I realized the fervor with which both major political parties drive American military adventurism.
For the bases in Chad in Niger, on the other hand, there is no such agreement. The right to operate is entirely "at will" and can be revoked by these governments at any time. As it appears they just did.
(Attention those rushing to type "ACKSHUALLY, what about Guantanamo Bay": Don't beclown yourself. Look into how the US is there in the first place.)