She was from the United New Democratic Party (UNDP) as a member of the Korean National Assembly (representative) for Ilsan-gab, and is a graduate of Ewha Womans University in Seoul with a degree in French literature.

[6] Han went to the United Arab Emirates on 24 September and held high level talks with Prime Minister Mohammed bin Rashid Al Maktoum.

According to Han, "around 50 South Korean companies of global competitiveness have established headquarters of the Middle East region in Dubai."

She expressed a desire to increase South Korean investment in the UAE and sign a Free Trade Agreement with the Gulf Cooperation Council.

The Government of South Korea agreed to invest an additional $2 billion in joint projects in the energy, uranium-extraction, construction, transportation, and banking sectors.

They signed several agreements, including one deal in which Uzbekistan will send 300 tons of Uzbek uranium ore to South Korea every year from 2010 to 2014.

The deal bypasses U.S. companies that acted previously as middlemen for South Korean imports of Uzbek uranium ore. Han also met with President Islam Karimov and parliament speaker Erkin Xalilov.

Han and Mirziyoyev boosted cooperation in the energy, agriculture, construction, architecture, and information technology sectors.

[10] Han resigned from her position as prime minister on March 7, 2007, amidst speculation that she would run in the December 2007 presidential elections.

After the informal meeting with former justice minister Kang Kum-Sil just before her resignation, Han said she would continue as a legislator and think about running for president.

In 2010, she declared to run for Seoul's Mayor position, but was very narrowly defeated by Oh Se-hoon of GNP by less than one percentage point.