Jim Mattis · Public domain

Avigdor Lieberman immigrated to Israel from Soviet Moldova in 1978 and built a political career representing the country's large wave of Russian-speaking immigrants, founding the Yisrael Beiteinu party. He has since held nearly every senior cabinet post in Israeli government — Defense, Foreign Affairs, Finance — and resigned as Defense Minister in 2018 over a Gaza ceasefire he opposed, a move that reflected his consistently hawkish line within Israeli coalition politics.