JOHANNESBURG, Sept. 26 (Xinhua) -- As the Global Sumud Flotilla (GSF), carrying international aid, sails toward the Gaza Strip, South African activists involved in the mission have called on the international community to oppose what they describe as Israel's genocidal actions.

The GSF, comprising about 50 civilian vessels and participants from over 40 countries, aims to challenge Israel's naval blockade imposed since 2007 and deliver food and medical aid to Palestinians.

The fleet has come under repeated attacks, including drone strikes on several vessels off Greece on Wednesday.

Among those on board are some South African citizens, including Mandla Mandela, grandson of late former president Nelson Mandela, who has long been engaged in humanitarian efforts for Gaza.

In a video posted on X on Thursday, Mandela appealed to the international solidarity. "Thank you for all your solidarity and support, and we hope that you continue to mobilize against the embargo of apartheid Israel and ensure you rally all nation-states in the Global North and Global South to put an end to the genocide," Mandela said.

South Africa's Department of International Relations and Cooperation said Thursday the government welcomed the support of countries that had facilitated the flotilla's safe passage. Italy and Spain deployed naval ships to assist the vessels following the drone attacks on Wednesday. ■