Russian Foreign Minister Sergei Lavrov said on Sunday that Moscow has started preparing answers to the questions related to arms control pact delivered by US officials, RIA news agency quoted him as saying.

"Just a week ago, a couple of days ahead of the announcement of the (US) aim to leave the Intermediate-Range Nuclear Forces treaty, Americans via their embassy in Moscow sent the Russian foreign ministry an extensive list of questions which are a concern to them," Lavrov said.

President Donald Trump said on Oct. 20 that Washington planned to quit the Intermediate-Range Nuclear Forces (INF) treaty which Mikhail Gorbachev, the last Soviet leader, and Ronald Reagan had signed in 1987.

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