MSNBC's Rachel Maddow explained how President Trump's decision to include Chad on his travel ban may have endangered the lives of servicemembers in Niger, four of whom were recently killed under circumstances that have not been adequately explained.

By including Chad on the travel ban against the advice of foreign policy experts and multiple officials, U.S. soldiers lost Chadian ground support in Niger. Multiple terrorist groups, including ISIS and Boko Haram, are active in Niger. But Chad began to remove its soldiers immediately following Trump's travel ban.

"[T]hose Chadian troops were really doing something in Niger. They were protecting those villages in that whole region from ISIS militant groups being able to operate freely and be able to take more territory from there once again," Maddow explained. "And pulling those troops out had an immediate effect in emboldening those ISIS attacks.”

Less than one week after Chad began removing troops from the region, four American soldiers were killed in an ambush.

“So, no wonder the president doesn’t want to talk about it," Maddow said.

Watch the full segments below.