Sultan was one of only two cardiologists left in the Gaza Strip, and the director of the Indonesian hospital in north Gaza. He was killed in an Israeli air strike on his apartment on Wednesday, along with his wife and at least three of his children.

Paying homage to the renowned cardiologist, Alser told The Guardian: “The killing of Dr Marwan al-Sultan by the Israeli military is a catastrophic loss to Gaza and the entire medical community, and will have a devastating impact on Gaza’s healthcare system.

“This is part of a much longer and systematic atrocious targeting of healthcare workers sanctioned by impunity.

„This is a tragic loss of life, but also an obliteration of their decades of lifesaving medical expertise and care at a time when the situation facing Palestinian civilians is unfathomably catastrophic,” Alser added.