Saif Abu Keshek, a Spanish citizen of Palestinian origin, and Brazilian activist Thiago Avila arrived in Athens on Sunday after days in Israeli custody.

The pair had been aboard the Global Sumud Flotilla, a civilian led mission attempting to deliver humanitarian aid to Gaza and challenge Israel’s long running blockade of the territory.

Israel’s Foreign Ministry confirmed the deportations, describing the flotilla as a ‘provocation mission’. Israeli authorities alleged that Abu Keshek had ties to a ‘terrorist’ organisation, while Avila was accused of illegal activity. Both men firmly rejected the claims, insisting their voyage was strictly humanitarian.

In a video shared after landing in Greece, Abu Keshek struck a calm but defiant tone. He thanked supporters, lawyers, colleagues and family members who campaigned for their release during the detention ordeal.

The episode has once again pushed the Gaza blockade into the global spotlight. Rights groups argue that intercepting civilian activists in international waters raises serious legal and moral questions, especially at a time when Gaza’s humanitarian crisis continues to deepen.

An Israeli court earlier this week dismissed an appeal challenging the activists’ detention, a ruling condemned by legal advocates as unlawful. The rights organisation representing the pair said the decision reflected a broader pattern of shrinking space for humanitarian action connected to Gaza.

The flotilla had departed from ports in France, Spain and Italy, carrying activists determined to draw attention to worsening conditions inside the Palestinian enclave. Similar missions in the past have also been intercepted before reaching Gaza’s shores.

Since 2007, Israel has maintained tight control over Gaza’s land, sea and air access. But the blockade has faced growing criticism during the ongoing war, which has left vast areas of Gaza in ruins and pushed much of the population into dependence on outside aid.

Humanitarian agencies repeatedly warn that food, medicine and fuel are entering the territory far too slowly, while temporary aid suspensions have intensified fears of famine and disease.

What this latest incident reveals is that even symbolic aid missions now carry heavy geopolitical weight. A small flotilla in the Mediterranean has become another flashpoint in a conflict where diplomacy, humanitarian action and military policy increasingly collide in full public view.