President Goodluck Jonathan in Abuja on Saturday urged members of the Armed Forces to discover new approaches and greater sophistication to tackle the security challenges facing the country.
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Jonathan made the call at the graduation ceremony of participants of Course 21 of the National Defence College (NDC), Abuja.
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Represented by the Senate President, Sen. David Mark, the president said it was evident that national and regional security in the 21st century was determined by forces that were operating within and beyond national borders.
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He added that adversaries in the past were easier to identify and confronted in open hostilities.
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The president said: "Today, the enemy is usually unseen, hiding behind human shields and despicable ideologies and deploying cyber offensives, in addition to lethal conventional and unconventional armaments.