ACCRA, Ghana (AP) — The U.S. military plans to return to Chad within a month for talks about revising an agreement that allows it to keep troops based there, an American general said Wednesday.

The U.S. said last month it was withdrawing most of its contingent of about 100 troops from Chad after the government questioned the legality of their operations there. This followed Niger’s decision to order all U.S. troops out of the country, dealing a blow to U.S. military operations in the Sahel, a vast region south of the Sahara desert where groups linked to al-Qaida and the Islamic State group operate.

U.S. Marine Corps Gen. Michael Langley, the commander of U.S. Africa Command, made the comments to reporters in Ghana at the second annual African Maritime Forces Summit, or AMFS.

He said the withdrawal of U.S. troops from Chad was expected to be temporary, and Chad had communicated to Washington that it wanted to continue the security partnership after the presidential election there.