Outgoing U.S. Secretary of State Mike Pompeo touted North Korea policy achievements over a series of Tweets on Saturday, but a senior Russian foreign ministry official later voiced public skepticism.

Over a series of 13 North Korea-related tweets posted on Saturday morning U.S. time, Pompeo trumpeted a series of achievements he claimed Washington scored through its “Maximum Pressure” policy, implemented shortly after Donald Trump’s inauguration in 2017.

“Two summits in Singapore and Hanoi and an historic meeting in the DMZ later, the wins are undeniable,” Pompeo said in one tweet. “(The) DPRK hasn’t tested nuclear weapons or long-range ballistic