Question: Who is the current head of the municipality of Tel Aviv-Yafo, located in Jaffa, the southern and oldest part of Tel Aviv-Yafo?

Context paragraphs:
Jaffa: Jaffa or Yafo (Hebrew: יפו‎ ‎ ,    ; Arabic: يَافَا‎ ‎ , also called Japho or Joppa), is the southern and oldest part of Tel Aviv-Yafo, an ancient port city in Israel.  Jaffa is famous for its association with the biblical stories of Jonah, Solomon and Saint Peter as well as the mythological story of Andromeda and Perseus, and later with oranges.

Yosef Zvi HaLevy: Yosef Zvi HaLevy (Hebrew: יוסף צבי הלוי‎ ‎ : 1874 – 13 March 1960) was an Israeli rabbi and head of the rabbinical court for Tel Aviv-Yafo.

Hassan Bek Mosque: The Hassan Bek Mosque (Hebrew: מסגד חסן בק‎ ‎ , Arabic: مسجد حسن بك‎ ‎ ), also known as the Hasan Bey Mosque, is one of the most well-known mosques of Jaffa, a city which is now part of the Tel Aviv-Yafo municipality in Israel.  It has been a site of much controversy, as demonstrated in recent years.

Sabil Abu Nabbut: Sabil Abu Nabbut (Arabic: سبيل أبو نبوت‎ ‎ ) also known as Tabitha's Well is a public fountain ("sabil") in Tel Aviv-Yafo, Israel, built in 1820/21 CE during the Ottoman period in Palestine.  Its main purpose was to facilitate the journey between Jaffa and Jerusalem.  The structure also contains two tombs.

Tel Aviv-Yafo Municipality: Tel Aviv-Yafo Municipality (Hebrew: עיריית תל אביב-יפו‎ ‎ ) is the arm of local government responsible for the administration of the Israeli cities of Tel Aviv and Jaffa.  Tel Aviv-Yafo Municipality handles such municipal affairs as education, culture, social welfare, infrastructure, urban planning and sanitation.  The current head of the municipality is Ron Huldai.

American–German Colony: The American–German Colony (Hebrew: המושבה האמריקאית–גרמנית‎ , "HaMoshava HaAmerika'it–Germanit") is a residential neighborhood in the southern part of Tel Aviv-Yafo, Israel.  It is located between "Rechov Eilat" and "Rechov haRabbi mi-Bacherach" and adjoins the Neve Tzedek area.

Tchernichovsky Prize: The Tchernichovsky Prize is an Israeli prize awarded to individuals for exemplary works of translation into Hebrew.  It is awarded by the municipality of Tel Aviv-Yafo.  Although initially awarded annually, it is now awarded every two years.

Dizengoff Prize: The Dizengoff Prize for Painting and Sculpture is awarded annually by the Tel Aviv-Yafo Municipality since 1937.

Jaffa (disambiguation): Jaffa is part of the city of Tel Aviv-Yafo in Israel.

HaKfar HaYarok: HaKfar HaYarok (Hebrew: הכפר הירוק‎ ‎ ; "The Green Village") is a youth village in Israel, located in southern Ramat HaSharon, along the northern border of Tel Aviv-Yafo.

Supporting paragraphs: Tel Aviv-Yafo Municipality Jaffa
Answer: Ron Huldai