Lahbib and Caroline Gennez, Belgium's minister of development cooperation and urban policy, posted photos of the destroyed building and demanded a meeting with Israel's ambassador envoy to the country to discuss the attack, which took place on Wednesday.
Jean Van Wetter, the CEO of Enabel, said Thursday that "we are all shocked."
"As a government agency working for the common good in a framework of international humanitarian law," he added, "we cannot accept this."
None of the agency's staffers were believed to be present when Israeli forces struck the building, as Belgium withdrew Enabel employees and their families from the territory two weeks ago.
A satellite data analysis released earlier this week shows that more than half of Gaza's buildings have been damaged or destroyed by Israel's U.S.-backed bombardment of the Palestinian enclave—one of the most devastating bombing campaigns in modern history.
The timing of the attack on the Belgian office building raised eyebrows, with observers pointing to the nation's status as one of the handful of Western countries not suspending aid to the U.N. Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) in response to Israel's allegation that a dozen of the agency's employees took part in the October 7 attacks.
"Belgium is one of the Western countries that has refused to cut funding to UNRWA. So Israel just bombed the office of the Belgian Agency for Development Cooperation in Gaza," Trita Parsi, executive vice president of the Quincy Institute for Responsible Statecraft,
wrote on social media. "This is a direct result of the impunity Washington has provided Israel."
Sixteen countries have halted their financial support to UNRWA, compromising the aid agency's ability to deliver humanitarian assistance to Gazans increasingly at risk of starvation and disease. Philippe Lazzarini, the UNRWA's commissioner-general,
said Thursday that the agency "will most likely be forced to shut down" its operations in Gaza and across the region by the end of this month if funding isn't restored.
The U.S. State Department announced its decision to suspend funding for UNRWA last Friday, just hours after the International Court of Justice
ruled that South Africa's genocide case against Israel was plausible and ordered the Israeli government to ensure the flow of humanitarian assistance to Gaza.
Questioned about the timing of the U.S. decision to suspend UNRWA funding, State Department spokesman Matthew Miller said during a
press briefing Thursday that "there was no concern" internally that the announcement would be seen as a rebuke of the ICJ's interim ruling.
Norwegian Foreign Minister Espen Barth Eide, whose country is among those that have declined to suspend aid to UNRWA, said Thursday that he is "reasonably optimistic" that at least some of the countries that have cut off funding will reverse course in the near future.
Eide said earlier this week that he has been "discussing the question of funding with other donors" and urged "fellow donor countries to reflect on the wider consequences of cutting their funding to UNRWA"
"UNWRA is a vital lifeline for 1.5 million refugees in Gaza," he added. "Now more than ever, the agency needs international support."