In his second trip to Aden, Martin Griffiths will meet with Hadi and his regime officials in an attempt to prevent an all-out assault on the crucial port city of Hodeida.
A regime official told Xinhua that the Griffiths will brief Hadi "on his latest peace efforts and the results of his meetings with Houthi leaders in Sana’a."
The UN envoy is exerting hard efforts to avoid military escalation in Hodeida, trying to bring Yemeni rivals back to the negotiation table instead of military confrontation.
Last month, Hadi received the UN envoy in Aden and insisted on full withdrawal of the Houthi revolutionaries from the strategic port city of Hodeida as a condition of a UN-brokered peace deal.
On July 4, Griffiths left the capital Sana’a after his meeting with Houthi leader Sayyed Abdul-Malik al-Houthi. Griffiths said the discussion was "fruitful."
Humanitarian agencies have warned of any attack on the port, saying it would lead to the world's biggest humanitarian catastrophe in modern history.
Hodeida is the single most important point of entry for food and basic supplies to Yemen's northern provinces controlled by Houthis, including the capital Sana’a.
More than 121,000 residents have fled the war-torn city of Hodeida and other parts of the province since June 1, the UN said this week.
