This is the best summary I could come up with:

BAMAKO, Sept 16 (Reuters) - Mali, Niger and Burkina Faso, three West African Sahel nations ruled by military juntas, signed a security pact on Saturday promising to come to the aid of each other in case of any rebellion or external aggression.

The latest coup in Niger drove a further wedge between the three and countries of the regional bloc, the Economic Community of West African States, which has threatened to use force to restore constitutional rule in the country.

Mali and Burkina Faso have vowed to come to Niger's aid if it is attacked.

"I have today signed with the Heads of State of Burkina Faso and Niger the Liptako-Gourma charter establishing the Alliance of Sahel States, with the aim of establishing a collective defence and mutual assistance framework," Mali junta leader Assimi Goita said on his X social media account.

All three states were members of the France-supported G5 Sahel alliance joint force with Chad and Mauritania, launched in 2017 to tackle Islamist groups in the region.

France has been forced to withdraw its troops from Mali and Burkina Faso, and is in a tense standoff with the junta that seized power in Niger after it asked it to withdraw its troops and its ambassador.

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