Presumed Boko Haram militants killed more than 20 people in a double suicide attack in northern Cameroon on July 22—executed by two teenage girls, both under the age of 15. The attacks targeted a market and an adjoining neighborhood in Maroua, capital of the Far Northern Region. (See map) That same day, 42 lost their lives in a series of blasts at two bus stations in Gombe, northeast Nigeria. A new five-nation force—from Nigeria, Niger, Chad, Cameroon and Benin—is due for deployment to fight Boko Haram by month's end. Boko Harams has been calling itself Islamic State West Africa (ISWA) since affiliating with the ISIS franchise earlier this year. (The Guardian, July 23; Long War Journal, July 22)

Authorities in Chad announced the arrest of a key Boko Haram leader and two henchmen in the capital N'Djamena on June 28. The militant leader, named as Mahamat Moustapha AKA Baana Fanay, is accused coordinating trafficking of weapons between Nigeria, Chad and Cameroon. Chadian security forces have arrested 74 accused militants since June 15 terror attacks in N'Djamena that killed 38 people and injured 100 others. But the day after the arrest ot Baana Fanay, two new suicide bombings in N'Djamena kiilled at least 11, including five police officers. The blasts were in residential neighborhoods, but at least one was apparently set off as police raided a suspected Boko Haram safe-house. (News Agency of Nigeria, June 30; AP, Al Jazeera, June 29)

An advance unit of hundreds of Chadian troops, backed up by a column of tanks, arrived at Cameroon's northern border town of Kousseri Jan. 17, greeted with cheers by local residents terrorized by Boko Haram. The intervention force, approved by Chad's parliament, is to number in the thousands. Days earlier, most of the residents of nearby Kolofata were forced to flee after an attack by Boko Haram. Cameroon troops killed 143 insurgents in a gun battle that lasted more than four hours, the army said. Boko Haram leader Abubakar Shekau this month threatened Cameroon's President Paul Biya in an online video. Biya sent some 1,000 troops to the border to fight Boko Haram after the wife of deputy premier Amadou Ali was captured in July by suspected militants. A French-led initiative calls for Nigeria, Niger, Cameroon and Chad to contribute 700 troops each to a multinational force against Boko Haram. (Press TV, Jan. 18; AFP, Jan. 17; BBC News, Bloomberg, Jan. 16)

Authorities in Mali said July 31 that a once-powerful jihadist leader has been arrested by French military forces in the northern desert town of Gao. Yoro Ould Daha was a commander of the Movement for Unity and Jihad in West Africa (MUJAO), which controlled Gao for nearly a year before the French intervention of 2013. Ould Daha was the MUJAO commander who announced the death of French hostage Gilberto Rodriguez-Leal, who was captured in November 2012 while traveling in Mauritania and Mali. He also took responsibility for the abduction of five humanitarian workers who were later released. (AP, July 31)

The United States has deployed 80 troops to Chad to assist in efforts to find the abducted Nigerian schoolgirls, who are believed to have been absconded across the border. "The force, made up largely of Air Force personnel, will conduct surveillance flights and operate drone aircraft but will not participate in ground searches," the Washington Post informs us. While the deployment was announced by President Obama in a "War Powers Notification" letter sent to House and Senate leadership, the troops are actually there to maintain the drones—not to actually tramp through the forests in search for the missing girls. The drones are ostensibly unarmed and only for surveillance purposes. (Mashable, May 21)

Almost 20,000 people of Chadian origin have fled violence in the Central African Republic (CAR) in recent weeks, and many more are expected to join the exodus, which is straining humanitarian capacity in Chad, a country many of those fleeing have never lived in. "Those of us who were born here are Central Africans, but we are treated like foreigners. We have never seen Chad but have to go there for our own protection," said Awa Rabilou, one of thousands of people camped for the last two weeks outside the Chadian embassy in Bangui, waiting for a place on a truck headed for Chad. "Our houses were burnt. We left with only the clothes we were wearing. They even threw grenades at us. It was people who joined the anti-balaka who did this. If we stay in our neighborhood, they will kill us," added Rabilou.

The authorities in Yaoundé, the Cameroonian capital, have set up tighter border controls in the Far North region to guard against infiltration by jihadist Boko Haram fighters from neighboring Nigeria as civilians flee insurgent attacks and a Nigerian military offensive, seeking safety across the border in Cameroon. A rapid response military unit has also been deployed and beefed up in the northern regions and some tourist hotels now have armed guards. "We have revised our security strategy. We have registered all expatriates and established police posts in areas where they work. There are security control posts along the border to reduce illegal entry," said Bob-Iga Emmanuel, the head of police division at the governor's office in the Far North region.

Sudan made minor headlines by expelling 20 staff members of the UN High Commissioner for Refugees, with UNHCR accusing the government of "compromising the ability of the refugee agency to effectively undertake its work in Darfur." (Radio Dabanga, Aug. 6) The spat comes amid a re-inflammation of the Darfur conflict. The UN Security Council passed a resolution last week calling for an end to heightening violence in Darfur, and greater action by "peacekeepers" to protect civilians. The council extended the mandate of the joint UN-African Union force in Darfur until next August. (AP, July 30) Days later, Misseriya tribal leader Ahmed Khiri boatsed to AFP that his forces had killed 100 members of the rival Salamat tribe in a battle near Garsila, with 28 lost on his own side. (AFP, July 30) Estimates of the number of newly displaced in Darfur so far this year is estimated at over 240,000. (Radio Dabanga via AllAfrica, Aug. 2)