A top UN official has warned that the international community would "pay a terrible price" if it fails to help rebuild Sudan's dilapidated economy as the African country transitions to civilian rule."The story of Sudan in year 2020 is not the story of the previous government," United Nations Development Programme (UNDP) administrator Achim Steiner told AFP in an interview during his visit to Sudan this week."It is the story in which waiting for too long to actually step in and support this (development) process may have a terrible price."More than a year after the start of a nationwide protest movement that led to the ouster of longtime ruler Omar al-Bashir last April, Sudan faces a series of challenges driven by an economic crisis.Years of recession were a key trigger for the protest movement against Bashir's 30-year-old autocratic regime.Months after he was ousted, the economy remains burdened with foreign debt of more than $60bn, inflation of about 60%, soaring unemployment and chronic shortage of fuel and foreign currency.READ | South Sudan president pardons prominent economistBut these challenges are exactly the opportunity for the international community to step in and help Sudan, said Steiner, the first UNDP chief to ever visit the northeast African country."Here is a country in which the youth, and particularly the women, have not only managed to pull off a peaceful revolution in large part, but they actually have an agenda to build a developmental state," Steiner said."The international community must recognise how unusual and how extraordinarily helpful this is in a region that is otherwise providing more and more worrying news about political instability and about extremism."'Danger in forgetting Sudan'Sudanese officials say there has been a lacklustre response from the international community to the country's reform process led by new Prime Minister Abdalla Hamdok, a well-respected economist.Most blame Washington's continued blacklisting of Sudan as a "state sponsor of terrorism", which makes international banking cumbersome and keeps overseas investors away.READ | US to name ambassador to Sudan for first time in 23 years: PompeoIn October 2017, Washington lifted its 20-year-old trade embargo imposed on Sudan, but kept the country on the terrorism blacklist along with Iran, Syria and North Korea.Removing Sudan from the blacklist is likely to take time, with Washington seeking assurances that Bashir's regime is being fully dismantled.Steiner said that for many, Sudan's blacklisting was no longer a crucial issue and he urged the US Congress to expedite the delisting.He said the international community was taking Sudan "a little bit for granted"."We are in danger of forgetting that Sudan... is actually a story that is more hopeful than it has been for 30 years. And are we missing an opportunity to actually lean in and support it?" said Steiner.ALSO READ | Sudan's youths back on the streets - to ease bus crisis"We as UNDP... are certainly committed to increase our engagement. This is a win-win proposition.""Our role and that of the World Bank, the IMF... is to come up with wiser and smarter advice than simply saying to Sudan 'Well, you are failing in your reform if you don't do x or y'," he said.Steiner lauded the new authorities for engaging in talks with rebel groups for ending conflicts in Darfur, Blue Nile and South Kordofan - regions riven by fighting under Bashir.