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Ministers admitted yesterday that they have no idea how long the military operation against Colonel Gaddafi could take.
Asked for an estimate, Armed Forces Minister Nick Harvey said: 'How long is a piece of string? We don't know how long this is going to go on.
'We don't know if this is going to result in a stalemate. We don't know if his capabilities are going to be degraded quickly. Ask me again in a week.'