A Russian court has sentenced a U.S. citizen to four years in jail for trying to take the stocks of Kalashnikov assault rifles out of a Moscow airport, the RIA state news agency reported on Tuesday.

Ukrainian President Volodymyr Zelensky has said that the United States wants a peace settlement between Ukraine and Russia by early summer, despite repeated rounds of talks failing to reach a breakthrough over the issues of territory and security guarantees.

Russia's top diplomat says that Moscow will observe the limits of the last nuclear arms pact with the United States that expired last week as long as it sees that Washington does the same.