Iranian officials ratcheted up pressure Wednesday ahead of a weekend nuclear deadline for European nations to come up with a solution for Iran to sell its oil abroad in the aftermath of escalated U.S. sanctions. President Hassan Rouhani reiterated a threat that Tehran would take additional steps away from the 2015 nuclear accord on Friday and accelerate nuclear activities if Europe fails to provide a solution, calling it Iran’s third, “most important step” away from the deal. Meanwhile, Iran’s Foreign Ministry announced that seven members of the 23-member crew of the seized British-flagged oil tanker Stena Impero held in the Persian Gulf would be released — an apparent good-will gesture meant to defuse tensions.