President Donald Trump’s maiden sanctions package targeting a handful of vessels carrying Iranian oil stopped short of the “maximum pressure” campaign his administration had pledged, according to shippers and analysts.

Iran accused the US of acting illegitimately and bullying in its response to the first sanctions imposed by the Trump administration against its oil trade. The US on Thursday blacklisted three ships, an Indian master, shipowners and managers in the first targeting of shipping under the new president.

According to the state department, the sanctions target a network that is bringing “illicit revenue to the Iranian military” through a front company, Sepehr Energy. Also included are a shadow tanker fleet and management companies that facilitate the supply of oil to China,