Deputy Foreign Minister of the Russian Federation Sergei Ryabkov said American policy is "extremely hostile" toward Russia.

Russia's point man for arms control cautioned Donald Trump's incoming administration on Friday against resuming nuclear testing, saying Moscow would keep its own options open amid what he said was Washington's "extremely hostile" stance.

Russia's Deputy Foreign Minister, Sergei Ryabkov, has warned the incoming administration of Donald Trump against resuming nuclear weapons testing. He said that Moscow would consider its options in response to what he described as an "extremely hostile" approach from Washington.

All four of Moscow's airports including another about 100 miles southwest of the Russian capital were temporarily shut down for undisclosed security concerns, authorities said.

"To ensure the safety of civil aircraft flights, temporary restrictions have been introduced on the operation of Sheremetyevo, Domodedovo, Vnukovo, Zhukovsky and Kaluga airports," Rosaviatsiya said on Dec.

Iranian President Masoud Pezeshkian is set to visit Moscow on Jan. 17 and sign a cooperation agreement with Russian President Vladimir Putin, Russian state news agency RIA cited Iran's ambassador to Russia as saying on Thursday.

Masoud Pezeshkian is expected to sign an agreement on cooperation between Tehran and Moscow with Russian President Vladimir Putin on Jan. 17.