Current State Minister of Foreign Affairs for Regional Affairs Philemon Mateke has welcomed South Sudan President Salva Kiir who has arrived for a mini-regional summit on security.
Kiir was the first head of state to arrive.
Visiting Israeli PM Netanyehu will on Monday afternoon join host President Yoweri Museveni and leaders of Kenya, Rwanda, Ethiopia, South Sudan, Zambia and Malawi in a regional anti-terrorism summit before flying to Kenya.
He is also expected to visit Rwanda and Ethiopia.
Mr Netanyahu said Israel was willing to help African states counter terrorism after a spate of attacks by al-Shabaab in East Africa and Boko Haram in northern Nigeria, plans he is expected to share with the regional leaders.