Over the last year, the Israeli military has received at least 100 of Oshkosh armored vehicles like the one in the video. They arrived on vessels operated by the commercial shipping and logistics giant A.P. Moller Maersk.

Israel has long used armored vehicles as killing machines throughout the occupied Palestinian territories. Images of Palestinians crushed by Israeli tanks and trucks are now grimly familiar to anyone paying attention to the ongoing Israeli onslaught in Gaza.

Analyzing shipment export data from over 2,000 shipments over the last year, the researchers report that they were able to reveal a commercial supply chain rife with materiel bound for use in Israel’s assault on Gaza. The researchers said the available shipping data suggests that Maersk ships violated a Spanish embargo policy by transiting through the port of Algeciras.

The Spanish embargo bars cargo ships carrying weapons that could be used for war crimes from making calls in Spanish ports; in May, the foreign ministry said the rule would apply to military goods bound for Israel. Since then, Maersk ships with military goods headed for Israel, including equipment for putting bombs on aircraft, frequently transited through Algeciras, one of the largest ports in Europe, said Palestinian Youth Movement and Progressive International researchers. (Maersk did not respond to a request for comment.)

“We can clearly state that Spain is violating the law,” said Irene Montero, a member of European Parliament from the Spanish left party Podemos. “Article 8.1 of Law 53/2007 on the Foreign Trade of Arms states that the authorization for the transit of military material must be suspended when there are ‘rational indications’ that the material will be used to exacerbate conflicts, in a manner contrary to human dignity, or in a human rights violation.”