When German President Joachim Gauck visits Nigeria, he will be coming to a country struggling with several issues including the impact of low oil prices. He will be meeting Nigeria's Buhari, who has his hands full.

German President Gauck before flying to Nigeria

Nigeria is Africa's largest economy. But this economy is struggling on several fronts. Since the drastic fall of oil prices, the country is struggling with the aftermath and many Nigerians are feeling the impact.

Nigeria's President Muhammadu Buhari is also not to be envied. Nearly a year ago, many Nigerians pinned their hopes on him and overwhelmingly voted him as their new leader.

Buhari promised to tackle many of the issues facing Nigeria, but he is so far facing stiff challenges

Buhari pledged to reform the country, which is plagued by massive corruption and religious divide.

But with Nigeria facing enormous challenges including terrorism and the displacement of tens of thousands, the 73 year-old leader is much more of a crisis manager now than a reformer.

When German President Joachim Gauck visits Nigeria, he will have enough of issues to discuss with President Buhari - issues such as the growing insecurity in southern Libya.

"That [the insecurity in southern Libya] is becoming a strategic time bomb for Africa and Europe," Buhari said last week at the European Union parliament.

"The South of Libya has become a thriving bazaar for weapons and therefore threatens the security of the Sahel, West Africa and other regions," he added.

Buhari said the Nigerian militant group, Boko Haram, gets its arms supplies from southern Libya. Boko Haram, which is seeking to create an Islamic caliphate, is also very active in neighboring Niger, Cameroon and Chad.