MOSCOW, March 20. /TASS/. Kremlin Spokesman Dmitry Peskov has refrained from commenting on US President Donald Trump’s remark about Russian President Vladimir Putin being a "tough cookie" in his view.

"The Russian language and the English language are both very rich," Peskov said. "Naturally, some politicians eagerly use the richness of their mother tongue."

He added that the Kremlin preferred not to indulge in linguistic analysis.

Trump dropped the remark in an interview to Fox TV. Extracts from that interview were aired on Saturday evening. The host mentioned the names of a number of US politicians and businessmen and of the Russian leader and asked Trump to offer a brief description of each of them.

"I don’t know him, but certainly he is a tough cookie," Trump said about Putin. "I don’t know what he is doing for Russia, we are gonna find out one day, I guess."