Iran said it would continue nuclear talks with European powers after "serious, frank, and detailed" conversations on Friday, the first such face-to-face meetin

It is another symbol of deepening strategic cooperation between Russia and Iran, a point of concern for U.S.-led Western allies.

Friday's launch was announced before nuclear talks between Iran and Britain, France, and Germany began in Istanbul and comes after Tehran tested one of its satellite-carrying rockets with a suborbital...