New HS2 boss Sir David Higgins says his argument to win support is "what's the alternative?".
Higgins: "Transport is the centre to all forms of regeneration... In the south it's about capacity, in the north reconnectivity."
Higgins adds that HS2 will fail if it's a political football and believes it can be cheaper if it's built quicker.
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Rahman was ejected from his powerful job in April by an Election Commissioner after being accused of corrupt and illegal practices.
The service was due to start in September but there is no agreement on pay and conditions such as how many night shifts staff will work.
Would you know what to do if you needed help? Here's the official advice from the Foreign Office.