(http://news.bbcimg.co.uk/media/images/81210000/png/_81210649_nigeria_kano_potiskum464.png) Nigeria's presidential and parliamentary elections have been postponed by six week to 28 March to give troops more time to beat back Boko Haram.
Mr Jonathan is facing a strong challenge from ex-military ruler Muhammadu Buhari in the poll.
Chadian troops have played a key role in helping Nigeria's military regain territory.
Military chiefs from Nigeria, Cameroon, Chad, Niger and Benin, are currently meeting to discuss plans to create an 8,700-strong force to fight Boko Haram.
(http://news.bbcimg.co.uk/media/images/75306000/jpg/_75306515_line976.jpg)
Boko Haram at a glance(http://news.bbcimg.co.uk/media/images/81218000/jpg/_81218881_81192278.jpg)
- Founded in 2002, initially focused on opposing Western-style education - Boko Haram means "Western education is forbidden" in the Hausa language
- Launched military operations in 2009 to create Islamic state
- Thousands killed, mostly in north-eastern Nigeria - has also attacked police and UN headquarters in capital, Abuja
- Abducted hundreds, including at least 200 schoolgirls
- Controls several north-eastern towns
- Launched attacks on neighbouring states
Why is Boko Haram so strong? (http://www.theinfostride.com/news/world-africa-30933860)
Soldiers without weapons (http://www.theinfostride.com/news/magazine-30930767)
Source: BBC