Retaliatory visa measures are being developed in Russia, said Foreign Minister Sergei Lavrov on Monday as another top Kremlin official said U.S. President Joe Biden’s recent comments are a “cause for concern.” During public comments, Lavrov said that the new visa measures would restrict entry for citizens from “unfriendly” nations. He did not provide details about the countries that would be targeted, but he did single out the United States and its allies. “Additionally, a draft presidential decree is currently being developed on retaliatory visa measures in connection with the unfriendly actions of a number of foreign states,” he said during a meeting in Moscow, according to state-run media. “This act will introduce a number of restrictions on entry to the territory of Russia.” Some measures are being developed to “respond to unfriendly actions by the United States and its satellites,” Lavrov also said. It comes as the Kremlin issued more …