The US has said that its citizens should depart Russia immediately, per Reuters.
"U.S. citizens residing or travelling in Russia should depart immediately," the U.S. embassy in Moscow said. "Exercise increased caution due to the risk of wrongful detentions."
"Do not travel to Russia," it said.
"Russian security services have arrested U.S. citizens on spurious charges, singled out U.S. citizens in Russia for detention and harassment, denied them fair and transparent treatment, and convicted them in secret trials or without presenting credible evidence," the embassy said.
"Russian authorities arbitrarily enforce local laws against U.S. citizen religious workers and have opened questionable criminal investigations against U.S. citizens engaged in religious activity."
"They (warnings) have been voiced by the State Department many times in the last period, so this is not a new thing," Kremlin spokesman Dmitry Peskov told reporters.
