As Roberto Azevedo steps down today as head of the World Trade Organization, here are penpics of the eight candidates running to become the next WTO director-general.

Liam Fox (Britain) - Liam Fox, 58, spent three years as Britain's first post-Brexit international trade minister. A former family doctor, the Scot twice ran for the Conservative Party leadership. 

Fox was the defence minister during the latter years of Britain's engagement in Afghanistan. The lawmaker is the only elected politician running. He has vowed to appoint women to at least half of the WTO senior leadership.

Abdel Hamid Mamdouh (Egypt) - A WTO veteran, he came to its predecessor GATT in 1985 as a negotiator for Egypt, before joining the secretariat in 1990. He ran the WTO's trade in services division from 2001 to 2017. 

Also a Swiss national, Mamdouh, 67, has the African Union's backing. 

He pitches himself as an honest broker who wants to diagnose the WTO's problems, and then reform and rebuild the institution.

Amina Mohamed (Kenya) - The former Kenyan foreign minister, 58, is well-known at the WTO, having already chaired the organisation's most important bodies: the Ministerial Conference, the General Council, the Dispute Settlement Body and the Trade Policy Review Body. 

The current sports minister ran for the WTO leadership in 2013 and her vision this time is "reform, recovery, renewal".

Ngozi Okonjo-Iweala (Nigeria) -  Her country's first female finance and foreign minister, the 66-year-old had a 25-year career as a development economist at the World Bank, eventually becoming its number two. 

She chairs Gavi, the Vaccine Alliance, is on the Twitter board of directors, and is a special envoy for the World Health Organization's Covid-19 fight.

Jesus Seade (Mexico) - A former WTO deputy director-general, Seade, like Mamdouh, reckons an old hand is needed to fix the organisation's problems. At 73, the Mexican-Lebanese dual national is the oldest candidate.

A former World Bank chief economist and International Monetary Fund assistant director, he was recently Mexico's lead in North American trade talks.

Mohammad al-Tuwaijri (Saudi Arabia) - A former air force pilot who flew more than 30 Gulf War missions, he was a banker who ran JP Morgan's fledgling Saudi Arabia operations before joining HSBC. 

The former Saudi economy minister, 53, currently advises the kingdom's royal court on economic strategy. He wants to do an "MRI scan" deep assessment of the WTO's problems.

Tudor Ulianovschi (Moldova) - He served as Moldova's foreign minister from January 2018 to June 2019 but before that he had been his country's ambassador to the UN and the WTO in Geneva. 

The youngest candidate at 37, his pitch is based on a "3D vision and approach": direct access to ministers, dialogue with ambassadors and driving efficiency in the WTO.

Yoo Myung-hee (South Korea) - Yoo, 53, became South Korea's first female trade minister in March last year after a career in trade diplomacy and foreign affairs. In 1995, she headed WTO affairs at the trade ministry and went on to strike free trade agreements with China and the US.

Her plan is to make the WTO more relevant, resilient, and responsive.