Nigeria’s president elect Muhammadu Buhari, has issued a warning to Boko Haram saying they saying he will focus on getting rid of the militant group which has continued to terrorise the country for many years.“Boko Haram will soon know the strength of our collective will. We should spare no effort,” Buhari said in his first formal speech since winning the election. “In tackling the insurgency, we have a tough and urgent job to do.”Buhari was the first democratically elected opposition leader of Nigeria in an election that was tightly contested pitting him against incumbent Goodluck Jonathan.He won by 2.5 million votes.Buhari a former military ruler has also vowed to tackle corruption which he termed as an even greater evil.He has also pledged reconciliation with political opponents who fear a return to his autocratic regime of the 1980s, and a government representing “all Nigerians”.It was Nigeria’s democratically conducted elections that won the hearts of many not only regionally but globally as well. World leaders congratulated Gen Buhari and hailed Nigeria’s democratic spirit.Buhari praised his defeated rival , saying: “I extend a hand of friendship and conciliation to President Jonathan and his team. I have no ill will against anyone. He has nothing to fear from me. He is a great Nigerian and still our president.”Pledging to uphold the rule of law, the former military ruler said: “Your constitutional rights remain in safe hands – you will be able to voice your opinion without fear of victimisation.”The 72-year-old general, who first came to power three decades ago via a military coup and campaigned as a born-again democrat, also promised to tackle graft in Africa’s largest economy.Buhari won the election with 15.4 million votes to outgoing president Goodluck Jonathan’s 13.3 million, a margin wide enough to prevent any challenge.Boko Haram has killed thousands in its push to carve out a caliphate in northeastern Nigeria.Despite the killing of more than a dozen voters by Boko Haram gunmen – who had pledged to derail the poll – the election was one of the most orderly in Nigeria’s history.Boko Haram Founded in 2002Official Arabic name, Jama’atu Ahlis Sunna Lidda’awati wal-Jihad, means “People Committed to the Propagation of the Prophet’s Teachings and Jihad”Initially focused on opposing Western educationLaunched military operations in 2009 to create Islamic stateDesignated a terrorist group by US in 2013Declared a caliphate in areas it controls in 2014Nigeria’s militant Islamist group Boko Haram – which has caused havoc in Africa’s most populous country through a wave of bombings, assassinations and abductions – is fighting to overthrow the government and create an Islamic state.Its followers are said to be influenced by the Koranic phrase which says: “Anyone who is not governed by what Allah has revealed is among the transgressors.”Boko Haram promotes a version of Islam which makes it “haram”, or forbidden, for Muslims to take part in any political or social activity associated with Western society.This includes voting in elections, wearing shirts and trousers or receiving a secular education.Boko Haram regards the Nigerian state as being run by non-believers, even when the country had a Muslim president – and it has extended its military campaign by targeting neighbouring states.