Smooth transition in Nigerian election
Incumbent Goodluck Jonathan phoned former military leader Muhammadu Buhari on Tuesday to concede defeat in Nigeria's presidential elections,
01:01 - Source: CNN
Nigeria's historic election 15 videos
sot buhari nigeria elections acceptance_00005211.jpg
Smooth transition in Nigerian election
01:01
Now playing
- Source: CNN
A Boko Haram flag flutters from an abandoned command post in Gamboru deserted after Chadian troops chased them from the border town on February 4, 2015. Nigerian Boko Haram fighters went on the rampage in the Cameroonian border town of Fotokol, massacring dozens of civilians and torching a mosque before being repelled by regional forces. AFP PHOTO/STEPHANE YAS        (Photo credit should read STEPHANE YAS/AFP/Getty Images)
Who are Boko Haram?
01:03
Now playing
- Source: CNN
pkg busari boko haram bring back girls year later_00003701.jpg
#BringBackOurGirls one year on
02:28
Now playing
- Source: CNN
exp QMB Akinwumi Adesina_00002001.jpg
Nigerian Minister: All African economies must diversify
04:30
Now playing
- Source: CNN
exp erin intv primo is now the time to invest in nigeria_00000416.jpg
Millionaire explains why he is investing in Africa
04:41
Now playing
- Source: CNN
newscenter.elbagir.former.captives.return.to.school_00015212.jpg
Former captives of Boko Haram return to school
02:53
Now playing
- Source: CNN
aman Shehu Sani
Negotiator sees 'fresh beginning' for finding Nigeria girls
09:26
Now playing
- Source: CNN
Nigeria's President-elect Mohammadu Buhari speaks after receiving his certificate of return from Independent Nigeria Electoral Commission (INEC) in Abuja, on April 1, 2015. Nigeria's president-elect Muhammadu Buhari today sought to reconcile past differences with incumbent Goodluck Jonathan, extending a hand of friendship to his beaten election opponent. AFP PHOTO / STRINGERSTRINGER/AFP/Getty Images
Nigeria President-elect: 'I'm not surprised' by victory
02:17
Now playing
- Source: CNN
Nigerian president-elect Muhammadu Buhari (L) waves in Abuja on April 1, 2015.
Nigeria's President-elect vows to stop Boko Haram
10:01
Now playing
- Source: CNN
aman Muhammadu Buhari
Who is Nigerian President-elect Muhammadu Buhari?
01:33
Now playing
- Source: CNN
erin dnt elbagir nigeria children for sale_00033905.jpg
Inside a camp where children are for sale
04:44
Now playing
- Source: CNN
Nigerian president-elect Muhammadu Buhari (L) waves in Abuja on April 1, 2015.
Nigerians give Buhari mandate to fight corruption
03:54
Now playing
- Source: CNN
pkg purefoy nigeria election buhari winner_00002010.jpg
Nigeria's historic election
01:03
Now playing
- Source: CNN
Caption:Nigerian President Goodluck Jonathan (L) and APC main opposition party's presidential candidate Mohammadu Buhari (R) smile after signing the renewal of the pledges for peaceful elections on March 26, 2015 in Abuja. Security is a major concern at Saturday's vote both from Boko Haram violence against voters and polling stations to clashes between rival supporters. In 2011, around 1,000 people were killed in violence after Jonathan beat Buhari to the presidency. AFP PHOTO / PHILIP OJISUA (Photo credit should read PHILIP OJISUA/AFP/Getty Images)
Expert: There is a 'thirst for change' in Nigeria
02:00
Now playing
- Source: CNN
A screengrab taken on May 12, 2014, from a video of Nigerian Islamist extremist group Boko Haram obtained by AFP shows girls, wearing the full-length hijab and praying in an undisclosed rural location. Boko Haram released a new video on claiming to show the missing Nigerian schoolgirls, alleging they had converted to Islam and would not be released until all militant prisoners were freed.  A total of 276 girls were abducted on April 14 from the northeastern town of Chibok, in Borno state, which has a sizeable Christian community. Some 223 are still missing. AFP PHOTO / BOKO HARAM 
RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / BOKO HARAM" - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTSHO/AFP/Getty Images
Boko Haram: What you need to know
01:57
Now playing
- Source: CNN