Mustafa Sentop will address parliament speakers and lawmakers from neighbouring countries at a Baghdad summit that is expected to discuss regional issues.
Hundreds more were injured in 25 out of 31 provinces following the flooding, which was triggered by torrential rainfall.
Signed in the presence of visiting Turkish President Recep Tayyip Erdogan and his Zambian counterpart in Lusaka, the 12 agreements cover areas ranging from trade and investment to tourism and diplomacy.
UN Secretary-General Antonio Guterres spoke to Rohingya during his visit to refugee camps in Bangladesh where some 700,000 Rohingya are taking refuge after fleeing persecution in Myanmar.
The UNSC delegation will meet Myanmar's top leader Aung San Suu Kyi and the military commander before traveling to northern Rakhine state, from which about 700,000 Rohingya fled, taking refuge in Bangladesh.
The two nations also signed a key security accord for the Indian Ocean to counter China's growing influence in the region during French president Emmanuel Macron's visit to New Delhi.
India's External Affairs Ministry said the two countries are expected to sign agreements on cybersecurity, energy and space cooperation and film production.
Recep Tayyip Erdogan will be the first Turkish president to visit Greece since Celal Bayar's trip to Athens in 1952.
Narendra Modi's comments came days after Merkel said Europe could no longer completely rely on traditional ally the US and needed to find its own way.
Benjamin Netanyahu's trip is the first time a serving Israeli prime minister has visited the country.
Almost 2 million people signed a petition to prevent US President Donald Trump from making an official state visit to the United Kingdom.
US President Donald Trump and Japanese Prime Minister Shinzo Abe expressed commitment for closer security and trade ties after their meeting at the White House.
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